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• Why doesn't the Windows 7 volume mixer remember per-application levels for all applications?

  - by mdives

  If I have the device's master level set to 50, and then lower an application level to 25; Once I close that application and reopen it, the volume levels should persist. The master level should remain at 50 and the application's at 25. This does happen for most applications. However, for one in particular, Napster, it does not. I subscribe to Napster's streaming service. I use the Napster desktop application to connect to that service. Every time that I open the Napster app, I have to adjust the application's volume level down in the volume mixer. When I open the app again after closing it, I have to do the same thing, the volume mixer is not remembering the set level. In fact. The level is reset back to 50, the same level as the device's master level. Has anyone else experienced this, with Napster or any other application? Is there a solution or is this a known issue?

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• Exchange DiskShadow/Robocopy backup does not purge log files

  - by Robert Allan Hennigan Leahy

  I have a series of scripts setup to backup my Exchange. The following command is executed to start the process: diskshadow /s C:\Backup_Scripts\exchangeserverbackupscript1.dsh This is exchangeserverbackupscript1.dsh: #DiskShadow script file set verbose on #delete shadows all set context persistent writer verify {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7} set metadata C:\Backup_Scripts\shadowmetadata.cab begin backup add volume C: alias SH1 create expose %SH1% P: exec C:\Backup_Scripts\exchangeserverbackupscript1.cmd end backup delete shadows exposed P: exit #End of script And this is exchangeserverbackupscript1.cmd: robocopy "P:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group" "\\leahyfs\J$\E-Mail Backups\Day 1" /MIR /R:0 /W:0 /COPY:DT /B This is not causing Exchange to purge its log files. The edb file is 4.7 gigabytes, but the First Storage Group folder itself is 50+ gigabytes due to many, many log files for each day going back to 2009. Is there any way -- I've Googled and haven't found anything -- to notify Exchange when I've completed a full backup, and have it purge its log files? According to this and this, end backup should cause Exchange to "flush the transaction logs for that storage group" but only "if a successful backup of a storage group occurred", which leaves my question as: What constitutes a "successful backup", and why is what I'm doing not it?

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• Nvidia Linux Driver Huge Resolution

  - by darxsys

  I'm trying to setup a working CUDA SDK on my Linux Mint. I'm new to Linux and everything connected with it. So, I tried following some steps on how to install CUDA. Firstly, I downloaded a Linux driver from here: http://developer.nvidia.com/cuda/cuda-downloads version 295.41. After that, I barely found a way to run it. I did it like this: 1. typed in sudo init 1 in terminal and switched to root 2. typed service mdm stop 3. ran the *.run file downloaded from the link above Then it started installing the driver. It gave some warning messages, but I ignored it. After installation, I typed init 5 and it came back to GUI screen, BUT everything is huge. I restarted, still huge. My screen resolution is 640x480 on a 17 inch laptop monitor. I tried running Nvidia X Server Settings, but it says: "You do not appear to be using Nvidia X Driver. Please edit your X configuration file." I tried that. Nothing happened. I cant change the resolution because that Nvidia Settings thing gives no options. Then I googled some things, installing some packages - nothing. The biggest problem is I don't understand whats really going on. My laptop is a Samsung with i7 and Nvidia Gt 650M with optimus. I cant even install bumblebee, but that is something I will try if I manage to get my resolution to default. Please, help!

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• How to have SSL on Amazon Elastic Load Balancer with a Gunicorn EC2 server?

  - by Riegie Godwin

  I'm a self taught back end engineer so I'm learning all of this stuff as I go along. For the longest time, I've been using basic authentication for my users. Many developers are advising against this approach since each request will contain the username & password in clear text. Anyone with the right skills can sniff on the connection between my iOS application and my Django/Gunicorn Server and obtain their password. I wouldn't want to put my user's credentials at risk so I would like to implement a more secure way of authentication. SSL seems to be the most viable option. My server doesn't serve any static content or anything crazy of that sort. All the server does is send and receive "json" responses from and to my iOS application. Here is my current topology. iOS application ------ Amazon Elastic Load Balancer ------- EC2 Instances running HTTP Gunicorn. Gunicorn runs on port 8000. I have a CNAME record from GoDaddy for the Amazon Elastic Load Balancer DNS. So instead of using the long DNS to make requests, I just use server.example.com. To interact with my servers I send and receive requests to server.example.com:8000/ This setup works and has been solid. However I need to have a more secure way. I would like to setup SSL between my iOS application and my Elastic Load Balancer. How can I go about doing this? Since I am only sending json responses to my application, do I really need to buy a certificate from a CA or can I create my own? (since browsers will not be interacting with my servers. My servers are only designed to send json responses to my iOS application).

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• What are useful .screenrc settings?

  - by gyaresu

  Basically like some of my own that I've posted below. I'm looking for added functionality to the programme 'screen'. At the very least have a look at the last line for a fantastic 'menu bar' at the bottom of a screen session. ## gyaresu's .screenrc 2008-03-25 # http://delicious.com/search?p=screenrc # Don't display the copyright page startup_message off # tab-completion flash in heading bar vbell off # keep scrollback n lines defscrollback 1000 # Doesn't fix scrollback problem on xterm because if you scroll back # all you see is the other terminals history. # termcapinfo xterm|xterms|xs|rxvt ti@:te@ # These will let you use bind -c selectHighs 0 select 10 #these three commands are bind -c selectHighs 1 select 11 #added to the command-class bind -c selectHighs 2 select 12 #selectHighs bind -c selectHighs 3 select 13 bind -c selectHighs 4 select 14 bind -c selectHighs 5 select 15 bind - command -c selectHighs #bind the hyphen to #command-class selectHighs screen -t rtorrent 0 rtorrent #screen -t tunes 1 ncmpc --host=192.168.1.4 --port=6600 #was for connecting to MPD music server. screen -t stuff 1 screen -t irssi 2 irssi screen -t dancing 4 screen -t python 5 python screen -t giantfriend 6 these_are_ssh_to_server_scripts.sh screen -t computerrescue 7 these_are_ssh_to_server_scripts.sh screen -t BMon 8 bmon -p eth0 screen -t htop 9 htop screen -t hellanzb 10 hellanzb screen -t watching 3 #screen -t interactive.fiction 8 #screen -t hellahella 8 paster serve --daemon /home/gyaresu/downloads/hellahella/hella.ini shelltitle "$ |bash" # THIS IS THE PRETTY BIT #change the hardstatus settings to give an window list at the bottom of the ##screen, with the time and date and with the current window highlighted hardstatus alwayslastline #hardstatus string '%{= mK}%-Lw%{= KW}%50>%n%f* %t%{= mK}%+Lw%< %{= kG}%-=%D %d %M %Y %c:%s%{-}' hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{= kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B} %d/%m %{W}%c %{g}]'

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• How can I track down the cause of ext3 filesystem corruption?

  - by Jon Buys

  We have a VMware vSphere 5 environment running CentOS 5.8 virtual machines. In the past two weeks we have had five incidents of virtual machines having a filesytem become corrupt, requiring an fsck to repair. Here is what we see in the logs: Nov 14 14:39:28 hostname kernel: EXT3-fs error (device dm-2): htree_dirblock_to_tree: bad entry in directory #2392098: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0 Nov 14 14:39:28 hostname kernel: Aborting journal on device dm-2. Nov 14 14:39:28 hostname kernel: __journal_remove_journal_head: freeing b_committed_data Nov 14 14:39:28 hostname last message repeated 4 times Nov 14 14:39:28 hostname kernel: ext3_abort called. Nov 14 14:39:28 hostname kernel: EXT3-fs error (device dm-2): ext3_journal_start_sb: Detected aborted journal Nov 14 14:39:28 hostname kernel: Remounting filesystem read-only Nov 14 14:39:28 hostname kernel: EXT3-fs error (device dm-2): htree_dirblock_to_tree: bad entry in directory #2392099: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0 Nov 14 14:31:17 hostname ntpd[3041]: synchronized to 194.238.48.2, stratum 2 Nov 14 15:00:40 hostname kernel: EXT3-fs error (device dm-2): htree_dirblock_to_tree: bad entry in directory #2162743: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0 Nov 14 15:13:17 hostname kernel: __journal_remove_journal_head: freeing b_committed_data The problem seems to happen while we are rsync'ing application data from another server. So far we have been unable to reproduce the problem, or identify a root cause. After we had a few servers have this problem, we assumed that there was an issue with the template, so we scrapped all VM's cloned off of the template, destroyed the template, and built a new template from scratch, installed from a newly downloaded CentOS ISO. We use HP EVA SAN's for datastores, and moved from a 4400 to a 6300 after the first problem. Since the move and rebuilding new virtual machines we have seen the issue twice. On one VM we shut down the server, removed two virtual CPUs, and booted it back up again, the problem presented itself almost immediately. On the other VM, we rebooted it, and the problem happened a half hour later. Any tips or pointers in the right direction would be appreciated.

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• Site to Site VPN problem, connection succesful data only oneway?

  - by Charles

  To start things off, I'm not the actual Administrator for the VPN Server, but he is also at a loss so I thought I'd ask it here. I know it's a Cisco ASA Firewall/VPN. I have a router that connects to the Cisco VPN server, it does so succesfully. I can ping everything within the remote network and from the remote network into my own. I've been able to SSH into a remote server over VPN as well, it all seems to work; until there's some more data returned. A quick example would be an internal webserver. The default homepage simply redirects, so only sends back HTTP headers with a "Location:". I receive this on my computer, but when I request the actual page then (which isn't that big) I don't get a response at all - it just stalls. And it does this for other services as well, for example SSH. I can do a couple of things while connected, but if there's more than xx output it seems to do nothing. The connection remains active throughout all of this. Has anyone ever experienced anything like this before / know what the problem might be? Another user who has a site-to-site connection with this VPN using the -exact same setup- has no problems, the only difference is that I have around 200ms ping to the VPN server/network because of a very long distance (other continent).

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• How to move a sata drive to a machine without AHCI mode

  - by Andrew Cooper

  I've got a Dell Inspiron 1545 on which the screen has died. I'm able to plug an external monitor into the Inspiron 1545 and it works fine, so the screen is the only issue. The OS is Win7. I'm trying to move the disk to a spare Dell Precision M90 laptop that I've got lying around. The problem is that almost as soon as the Windows logo appears in the boot sequence I get a BSOD with a STOP 0x0000007B message. Researching this message pointed to issues with SATA AHCI mode. I looked in the BIOS of the Inspiron 1545 and the controller was set to AHCI mode. I set it to ATA mode and tried to boot with the same drive and got the same result as on the Precision M90. Switching back to AHCI allowed the machine to boot correctly again. I checked the BIOS on the Precision M90 and it doesn't seem to support AHCI mode, although it is a SATA controller onboard. The BIOS is the latest A08 version available from Dell. Is there any way I can get this drive to boot in the M90 without reformatting it?

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• Excel 2010 data validation warning (compatibility mode)

  - by Madmanguruman

  We have some legacy worksheets that were created in Excel 2003, which are used by LabVIEW-based test automation software. The current LabVIEW software can only handle the legacy .xls format, so we're forced to keep these worksheets as-is for the time being. We've migrated to Office 2010 and when working with these worksheets, I see this warning: "The following features in this workbook are not supported by earlier versions of Excel. These features may be lost or degraded when you save this workbook in the currently selected file format. Click Continue to save the workbook anyway. To keep all of your features, click Cancel and then save the file in one of the new file formats." "Significant loss of functionality" "One or more cells in this workbook contain data validation rules which refer to values on other worksheets. These data validation rules will not be saved." When I click 'Find', some cells that do indeed have validation rules are highlighted, but those rules are all on the same worksheet! We're using simple list-based validation, with some cells off to the side containing the valid values (for example, cell B4 has a List with Source "=$D$4:$E$4") This makes no sense to me whatsoever. One, the workbook was created in Excel 2003, so obviously we couldn't implement a feature that doesn't exist. Secondly, the modifications we're making don't involve changing the validation rules at all. Thirdly, the complaint that Excel is making is incorrect! All of the rules are on the same worksheet as the target. As if the story wasn't bizarre enough: I went ahead and saved the worksheet with Excel 2010. I then went to an old computer back in the lab and opened the document with Excel 2003. Guess what - the validations were untouched! My questions are: is this a legitimate bug in Excel 2010, or is this some exotic error in the legacy .xls worksheet that is confusing the heck out of Excel 2010? Has anyone else observed this issue working in compatibility mode?

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• Fix for php 5.3.9 libxsl security "bug" fix

  - by Question Mark

  just this morning i updated my debian server to php 5.3.9 , change log (last item in list) has a fix for this bug and now when running any hosted site using XSL transforms i get: Warning: XSLTProcessor::transformToXml(): Can't set libxslt security properties, not doing transformation for security reasons I'm not using any <sax:output> tags in my xslt at all. Does anybody have any information on this, current chatter about it is thin, so i'm i little lost. Using the suggestion about switching ini settings on and off either side of -transformToXml(): ini_set("xsl.security_prefs", XSL_SECPREFS_NONE) or $xsl->setSecurityPreferences(XSL_SECPREFS_NONE) brings me back to the same error Many thanks. Progress: - Upgrading libxml and recompiling libxslt against the new version was a good suggestion, though has not fixed the issue. - Compiling the latest php5.3 snapshot does not fix the issue. Solution: I'm unsure what actually solved this, very sorry for anyone else having the same problem. firstly i upgraded libxml, then applied a few patches, then went into php source for the xsl parser and added some debugging and a few tweaks, after a few compiles getting the configure args right the error went away and wasn't reproducible. I would definitely recommend upgrading libxml as Petr suggested below and then grabbing the latest snapshot from php.net.

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• How to read an Excel file, get and set the information using POI

  - by user1399713

  I'm using Java to read a form that is in an Excel spreadsheet that the user fills in with information about geometric shape. Ex: Shape :_________ Color :_________ Area: _________ Perimeter:________ So far the code I have can I can read what I want in the form and print out the values of Shape, Color, Area, Perimeter. public class RangeSetter { /** * @param args * @throws IOException */ public static void main(String[] args) throws IOException { FileInputStream file = new FileInputStream(new File("test2.xls")); //C:\Users\Yo\Documents // Setup code String cname = "Shape"; HSSFWorkbook wb = new HSSFWorkbook(file); // retrieve workbook // Retrieve the named range // Will be something like "$C$10,$D$12:$D$14"; int namedCellIdx = wb.getNameIndex(cname); Name aNamedCell = wb.getNameAt(namedCellIdx); // Retrieve the cell at the named range and test its contents // Will get back one AreaReference for C10, and // another for D12 to D14 AreaReference[] arefs = AreaReference.generateContiguous(aNamedCell.getRefersToFormula()); for (int i=0; i<arefs.length; i++) { // Only get the corners of the Area // (use arefs[i].getAllReferencedCells() to get all cells) CellReference[] crefs = arefs[i].getAllReferencedCells(); for (int j=0; j<crefs.length; j++) { // Check it turns into real stuff Sheet s = wb.getSheet(crefs[j].getSheetName()); Row r = s.getRow(crefs[j].getRow()); Cell c = r.getCell(crefs[j].getCol()); if (c!= null ){ switch(c.getCellType()){ case Cell.CELL_TYPE_STRING: System.out.println(c.getStringCellValue()); } } } } What I want to do is to create a method that gets the that information and another that sets it. So far I can only print to the console

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• How do I stop mail.app and its nag screen from opening upon login in OS X if I don't use it

  - by user26453

  Currently whenever I start OS X (10.6.2), mail.app starts up with a "Welcome to Mail" dialog, asking me to create an account by inputting name, email address, and password. If I cancel this dialog, the app just hangs and I have to force quit it. I do not use the mail.app and I do not want it to start up with OS X. I have checked the login items and it is NOT present in the login items list for my account. I have also ctrl+clicked the doc icon that appears and confirmed there is no option enabled for "Run at Login". If I go ahead and just spam continue through the dialogs for a new account, I can get through to actually using Mail and accessing preferences. I cannot find a startup option in Mail preferences. After I have completed this, if I now restart, Mail does NOT open automatically. However as soon as I delete the account that I created, it once again goes back to popping up a "Welcome to Mail" dialog every time I startup and login. As best as I can tell, it seems OS X checks if an account exists in the Mail app, and if it does not, it will always start up a "Welcome to Mail" dialog on login, regardless if the Mail app is set to run via login items, etc. This is incredibly frustrating given I have no intention of using the Mail app. I realize I can easily leave account info in there (perhaps even disable the account via preferences), but this behavior is ridiculous. ajgs

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• VMware and Windows Activation

  - by Peter M

  Yesterday I installed Slysoft's Virtual CloneDrive in order to mount an iso for some software installation on my host system (XP Pro SP3) This morning I fired up VMware and made a linked clone of an existing XP vm in order to do some software testing. This is the sort of thing that I do all the time, and the base XP vm that I clone was activated a long long time ago. The surprise today was that the newly cloned vm was no longer activated and XP cited major changes in hardware as the reason. I repeated the test with a full clone of the base system and got the same message. I then started up my base vm and it seemed to be activated, yet another vm (which I fully cloned from the base vm a long time ago) now started reporting that XP was not activated. At this point I guessed that Virtual DriveClone might have been the source of my hardware differences so I uninstalled it and rebooted. After this I made a new linked clone and full clone of the base vm and XP did not complain about not being activated. So I seem to be back to where I was before installing Virtual DriveClone with the exception that that one particular XP vm continues to complain about activation (even though 4 or 5 other XP vm's are fat and happy) Now to my questions: Why would adding Virtual CloneDrive to the host system affect XP activation on the vm's? From their point of view I would have thought that the environment had not changed as I had not enabled any new hard drives in their systems. Or is adding a hard drive to the host system enough to upset XP activation? Since this event, one of my fully cloned vm's is still reporting that XP is not activated even though I have removed Virtual CloneDrive. Is there anyway to convince XP that it is on the same system as yesterday? Or are my only options to do an activation or restore the vm from a previous backup?

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• Mail queue directory stuck in IIS SMTP server

  - by Loftx

  Hi there, We have an IIS SMTP server which sends out a largish number of mails (4000 or so) in batches overnight, and recently we've seen mails get "stuck" in the queue directory. Normally restarting the SMTP service seems to fix this, but it's happened a few times so I'm looking for more information. We sent out around 12,000 emails last night in 3 batches of roughly 4000. Around 10 hours later there are still 2000 or so in the queue directory which don't seem to be leaving the queue. Any new mails which appear in the queue are picked up almost immediately and sent to their destination, but these 2000 or so don't seem to move. Looking at the date modified on the emails some match up with the time they were sent, but around 1000 of them have modified dates stretching up to now. e.g. there was one mail with a date in the message headers of 5:30 this morning, but it's date modified is 11:50 and there are 3 other messages with a date modified of 11:50, then 5 with 11:49, 2 with 11:45 stretching back for a few hours and all with actual message headers far earlier. The logs for the server look like this 11:54:52 127.0.0.1 EHLO - 250 11:54:52 127.0.0.1 MAIL - 250 11:54:52 127.0.0.1 RCPT - 250 11:54:52 127.0.0.1 DATA - 250 11:54:52 127.0.0.1 QUIT - 240 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 EHLO - 0 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 MAIL - 0 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 RCPT - 0 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 DATA - 0 11:54:53 85.115.62.190 - - 0 11:54:54 85.115.62.190 - - 0 11:54:54 85.115.62.190 QUIT - 0 11:54:54 85.115.62.190 - - 0 All codes are either 250 or 240 or 0. I believe 250 and 240 indicate success, but I don't know what all the 0s are. Could someone with more experience of mail server troubleshooting give me a hand or tell me what to try next. Thanks, Tom

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• Macs don't connect to wifi access point but PCs will

  - by Josh

  So, as a side project I'm going to try and figure out why the wifi APs in my building exhibit the following behavior: - They typically allow all types of computers to connect without issues - Sometimes Apples can't get an IP address but will still connect to the AP's signal - Less often, PCs can't connect to the wifi (same as above - yes signal, no IP addy) - Don't let Raiders fans on no matter the time of day! My first thought was that the DHCP leases were all taken up when the Apples would try to connect, and it was just their unlucky timing, but I would then try to log on with a PC that had a new, unleased MAC address and it would work... Could this be something to do with interoperability between an apple wifi card, and the APs? Different parts of the DHCP lease being taken up first? The fact that the Seattle Mariners might actually be good this year?? If this hasn't used up everyone's patience (with my crappy sports jokes), something else I could use some help with: - We don't have the model or type of AP - This is because there is no documentation available for them, and they literally look like small white boxes with no writing on them. Also, the company that installed them is out of business, so the situation might be that no docs will ever be on the way. -- Do you guys have any ideas on how to figure out what we have? Thanks as always for all the help, and I'm looking forward to the day when I know enough to start contributing back to the site, Josh

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• Network Load Balancing, intermittent port problem

  - by Jimmy Chandra

  Trying to troubleshoot an intermittent problem. I think it might be related to an NLB issue. We are using Windows Network Load Balancing to balance load for our multiserver SharePoint front ends. Say... Web Front End 1 IP is 192.168.1.100 and Web Front End 2 IP is 192.168.1.101, the NLB is setup to load balance both WFE servers on any incoming traffic to the IP 192.168.1.200. Sometimes we got an intermittent issue where when we try to access the SharePoint site using 192.168.1.200:8080 (say the site is set up to run on port 8080) from a remote client, it will display page not found. Pinging the 192.168.1.200 will give responses, but when trying to telnet to 192.168.1.200:8080 it just won't connect. However, browsing the SharePoint site directly on individual WFE (192.168.1.100 and 192.168.1.101) show no problem whatsoever. My guess also (we didn't get a chance to try it yet, but I think it should work), if I try connecting remotely to individual server, it will respond just fine. But any attempt on trying to connect using the virtual IP (192.168.1.200) will fail miserably. Funny thing is, after a while it will return back to normal. Anyone had similar experience with this type of problem while implementing NLB before? We are doing this in a virtual environment.

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• App-V Problems After SCCM 2007 SP2 Upgrade

  - by GAThrawn

  We're running an SCCM (MS System Centre Config Manager, successor to SMS) 2007 environment and delivering a number of applications to clients virtualized using App-V 4.5.1. The App-V apps are delivered by SCCM in Download-and-Execute, not streaming mode. The SCCM environment was recently service packed to SCCM 2007 SP2 (amongst other things this gives Win7 support). We also pushed out the updated SCCM clients to our workstations. This seems to have broken file associations for virtual apps for a large number of our users. The users can still open their App-V apps by finding the specific app on their Start Menu and clicking it's icon, but double-clicking an associated file in Explorer, or opening an email attachment gives the "This action is only valid for installed applications" error. There is a Technet blog entry from the App-V team talking about this issue "Upgrade to ConfigMgr 2007 SP2 may break App-V File Type Associations" but running the script there comes back saying "The User Interface option has been updated" but hasn't seemed to fix the problems for any of our users. Unfortunately the Technet blogs don't seem to have comments switched on so you can't see how this has worked out for other people. Anyone else had this problem, have you found any other way to fix it?

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• Reduce power consumption of gaming computer while idle

  - by White Phoenix

  This is my current build: EVGA X58 (first generation) motherboard Intel i7 965 clocked @ 3.3 Ghz 3x DDR3-1600 Corsair RAM at stock timings and voltages Corsair AX750 80 Plus Gold PSU 1 Optical Drive 1 Seagate 7200.10 500 GB drive 2x Western Digital Caviar Black 1 TB drives OCZ Vertex 1 60 GB EVGA GTX 460 oc'd at 800/1600/1850 Antec 1200 case HT-Omega Striker 7.1 Sound Card Windows 7 32-bit Professional (PAE Enabled) I've already seen this post Reduce power use on computer and this post How do I lower power consumption of my computer and while useful, I'm looking for answers specific to my build and OS. I'm pretty sure this build is a energy-intensive build by default, but I want to try to reduce the amount of energy my build uses when I leave it idle (when I go to bed or go out, etc). The first requirement for this machine is that I need to leave it on, so I cannot turn it off while it's being unused. I run it as a file server for personal reasons and I also leave it on in case people leave me messages on various IM services and chat clients (IRC, MSN, Steam, XFire, Pidgin, etc). I'm also unable to replace the parts in my computer with a cheaper "greener" part. What are some ways to minimize the amount of power the machine uses? I'm already using a high efficiency power supply (80 Plus Gold), but I imagine there's other things that can be done in the BIOS and Windows' power settings to reduce power usage while I'm not using the computer. From what I can tell, I can't use Sleep since that'll disable network access (whole reason why I leave the computer on in the first place). I already turn off my monitor when it's not in use. I enabled Intel SpeedStep within the BIOS (I know, I have a 965 and why am I enabling SpeedStep?) Should I bring the graphics card back to stock speeds and lower the clock on the processor even more? Main reason why I'm asking is I think this computer alone is the reason why my power bill is high, so I want to reduce its consumption to as low as possible without having to shut the thing down.

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• Losing JSESSIONID when using ProxyHTMLURLMap

  - by Matthew Schmitt

  I've setup a reverse proxy between an Apache front-end and multiple Tomcat backends. The below block of code includes the ProxyHTMLURLMap param so that the HTML can be rewritten to remove the Tomcat context path. With this setup in place, after logging into my application, an initial JSESSIONID is set properly, but when navigating to any other page, this JSESSIONID is lost and another one is set by the application. I should mention that the initial login directs to a URL that includes the current context path (i.e. https://app.domain.com/context/home), but when navigating to another page, that context path is not present in the URL (i.e. https://app.domain.com/page2). <Proxy balancer://happcluster> BalancerMember ajp://happ01.h.s.com:8009 route=worker1 loadfactor=10 timeout=15 retry=5 BalancerMember ajp://happ02.h.s.com:8009 route=worker2 loadfactor=10 timeout=15 retry=5 BalancerMember ajp://happ03.h.s.com:8009 route=worker3 loadfactor=5 timeout=15 retry=5 BalancerMember ajp://happ04.h.s.com:8009 route=worker4 loadfactor=5 timeout=15 retry=5 BalancerMember ajp://happ05.h.s.com:8009 route=worker5 loadfactor=5 timeout=15 retry=5 ProxySet lbmethod=bytraffic ProxySet stickysession=JSESSIONID </Proxy> ProxyPass /context balancer://happcluster/context ProxyPass / balancer://happcluster/context/ <Location /context/> # Rewrite HTTP headers and HTML/CSS links for everything else ProxyPassReverse / ProxyPassReverseCookieDomain / app.domain.com ProxyPassReverseCookiePath / /context ProxyHTMLURLMap /context/ / # Be prepared to rewrite the HTML/CSS files as they come back # from Tomcat SetOutputFilter INFLATE;proxy-html;DEFLATE </Location> Has anyone ever run into a similar situation?

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• How should I manage VPS email?

  - by Xeoncross

  I have been slowly learning how to run a linux VPS for a while now. Since I build websites I'm confident with running and securing a web server like nginx... or at least there haven't been any casualties yet. However, email scares me. Almost all websites require email to communicate with users. Most of the time email is only needed on my sites during registration as a means of verification. I hardly ever need to accept incoming mail back. Nevertheless, my lack off understanding of how email servers can be abused is worrying me. Not only do you need to secure email servers - you also have to prove to the world that your emails are legit and constantly fight against being blacklisted. Insuring my emails 'good name' is not something I want to devote my life too. What should someone like me do to send emails from my VPS? Should I look for a company to send email through that can worry about this for me? Should I just use google apps until my sites are large enough to worry about? Or is all this just ignorant fear and running your own email server (that actually works) really is easy?

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• Alias using Nginx causing phpMyAdmin login endless loop

  - by Seb Dangerfield

  Recently I've been trying to set up a web server using Nginx (I normally use Apache). However I've ran into a problem trying to set phpMyAdmin up on an alias. The alias correctly takes you too the phpMyAdmin login screen, however when you enter valid credentials and hit go you end up back on the login screen with no errors. Sounded like a cookie or session problem to me... but if I symlink the phpMyAdmin directory and try logging in through the symlinked version it works fine! Both the symlink and the alias one set the same number of cookies and both set seem to set the cookies for the correct domain and path. My Nginx config for the php alias is as follows: location ~ ^/phpmyadmin/(.*\.php)$ { alias /usr/share/phpMyAdmin/$1; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $request_filename; } I'm running Nginx 0.8.53 PHP 5.3.3 MySQL 5.1.47 phpMyAdmin 3.3.9 - self install And php-mcrypt is installed. Has anyone else experienced this behaviour before? Anyone have any ideas about how to fix it?

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• Edit-text-files-over-SSH using a local text editor

  - by Mikko Ohtamaa

  I am working in various Linux and UNIX environments. I'd like to elegantly solve the problem of editing remote configuration files over SSH. Instead of using terminal editors (nano), I'd like to open the file in a local text editor on my desktop (Sublime Text 2). CyberDuck, WinSCP and various other SFTP apps can do this. Using editors over X11 forwarding has also proven to be problematic. Also using archaic text editors like Vim or Emacs do not serve my needs well. They could do this, but I prefer using other text editing software. Using ssh mounts (FUSE) are also problematic unless they can happen on the demand and triggered by the remote site. So what I hope to achieve Have a somekind of easily deployable shell script etc. which I can copy to remote server (let's call it mooedit) I run mooedit command on the remote server of which I have connected over SSH connection mooedit sends some kind of signal (over SSH( to my local desktop On my local desktop this signal is captured and it determines 'a ha! moo wants to edit a file on server X in folder Y' File is SFTP transfered to the local desktop (/tmp) File is opened in a nice GUI text editor on the local desktop When Save is pressed, the local desktop notices changes in the file and SFTP sends the resulting file back to the server The question is: What signaling mechanisms SSH provides for this? Any other methods to trigger a local text editor for remote SSH file?

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• Opening an existing process

  - by Grasper

  I am using Eclipse in Linux through a remote connection (xrdp). My internet got disconnected, so I got disconnected from the server while eclipse was running. Now I logged in again, and I do the "top" command I can see that eclipse is running and still under my user name. Is there some way I can bring that process back into my view (I do not want to kill it because I am in the middle of checking in a large swath of code)? It doesnt show up on the bottom panel after I logged in again. Here is the "top" output: /home/mclouti% top top - 08:32:31 up 43 days, 13:06, 29 users, load average: 0.56, 0.79, 0.82 Tasks: 447 total, 1 running, 446 sleeping, 0 stopped, 0 zombie Cpu(s): 6.0%us, 0.7%sy, 0.0%ni, 92.1%id, 1.1%wa, 0.1%hi, 0.1%si, 0.0%st Mem: 3107364k total, 2975852k used, 131512k free, 35756k buffers Swap: 2031608k total, 59860k used, 1971748k free, 817816k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 13415 mclouti 15 0 964m 333m 31m S 21.2 11.0 83:12.96 eclipse 16040 mclouti 15 0 2608 1348 888 R 0.7 0.0 0:00.12 top 31395 mclouti 15 0 29072 20m 8524 S 0.7 0.7 611:08.08 Xvnc 2583 root 20 0 898m 2652 1056 S 0.3 0.1 139:26.82 automount 28990 postgres 15 0 13564 868 304 S 0.3 0.0 26:33.36 postgres 28995 postgres 16 0 13808 1248 300 S 0.3 0.0 6:54.95 postgres 31440 mclouti 15 0 3072 1592 1036 S 0.3 0.1 6:01.54 gam_server 1 root 15 0 2072 524 496 S 0.0 0.0 0:03.00 init 2 root RT -5 0 0 0 S 0.0 0.0 0:04.53 migration/0 3 root 34 19 0 0 0 S 0.0 0.0 0:00.04 ksoftirqd/0 4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 5 root RT -5 0 0 0 S 0.0 0.0 0:01.72 migration/1 6 root 34 19 0 0 0 S 0.0 0.0 0:00.07 ksoftirqd/1 7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1 8 root RT -5 0 0 0 S 0.0 0.0 0:04.33 migration/2 9 root 34 19 0 0 0 S 0.0 0.0 0:00.05 ksoftirqd/2

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• Windows 7: Setting up backup to an external hard drive on another computer on the network

  - by seansand

  I have an external hard drive connected to a Windows 7 (Home Edition) computer. I have another computer (with Windows 7 Ultimate), and I want to have the Windows 7 Ultimate back up to the same external hard drive, without having to disconnect and move the external hard drive from the Home Edition PC. When I get to the "Set up backup" dialog within Windows 7, it asks me where to save the backup. I select "Save on a network". However, when I enter "\\computername\harddrivename" under Browse, the "OK" button remains grayed out. The button remains grayed out unless I also enter a Username and Password under "Network credentials". However, the account I have on the other computer doesn't have a password for it. To un-gray out the button I must enter a fake password, allowing me to click "OK", but then obviously I get a "bad password" error. Does anyone know how to get around this problem? (Seems kind of ridiculous.) I made sure that the security settings with the external hard drive on the other computer are full access to Everyone, so permissions is not the problem. I also thought about using Homegroup instead of the regular security settings, but there is no obvious way to go about it that way, either.

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• Application to automate Windows software installation in a test lab

  - by Marc

  I have several test environments (hyper-V) which contain a variety of windows servers. Each machine needs periodically rolling back to a given snapshot and then re-installing with the latest version of our software to test. The software installs are quite complex MSI's with a fair few option screens. I know that the installs can be driven from the command line, passing in parameters to override the wizard options. At the simplest level I suppose I could just write a batch file to kick off each install with the required parameters, however the values that are passed in do need to change from time to time (and environment to environment) so a tool with a config file and simple GUI seems like a better idea. I think what makes it slightly more painful is the multiple environments. For example one environment might contain 4 servers and need a config file with all the server names, service endpoints etc. Another environment might be a 1-box install with all names and endpoints set to localhost. So, ideally I want to be able to store different setup configurations and use them to run all the required installers with the relevant settings against the relevant machines. Before I go off to write the thing, does anyone know of an existing, simple, free tool that will let me achieve this?

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