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• NX Client for Windows 7 Opens Remote Desktop in Multiple Windows

  - by Corey Kennedy

  What I'm trying to do: access my Ubuntu desktop remotely via NX Client on my Windows 7 laptop. My environment: server: Ubuntu 10.10 on AMD 1Ghz/512MB RAM PC client: Windows 7 on ThinkPad sl510 Software: server is running NXServer 3.4.0. Using xfce4 window manager. Laptop is using NXClient for Windows In my NX Client "Desktop" settings I've selected "Unix" and "Custom" for OS and environment. I've also specified "startxfce4" as the application to launch when NX connects. I am able to authenticate an NX session on my laptop. By this I mean, I can start the client on my laptop, enter credentials for my Linux user, and NX establishes a connection to the server and attempts to open a remote desktop window. The problem, though, is that this remote desktop is "fragmented" into many Windows. One window will display the bulk of my desktop (complete with desktop icons for "Home," "File System," and "Trash") while another window will contain the taskbar, and another window will contain the application strip. I can select each of these Windows individually, but I cannot click on any objects within them. I've searched Super User, Ubuntu Forums, NX help, Server Fault, and tried many Google searches - none have turned up another case of this particular problem. I'm stumped. Does anyone have any suggestions for what I might try? I'm guessing the problem has to do with my xfce config files, but I've only just setup this server - it's been a long time since I've used Linux and there's a lot I just don't know. What I am NOT trying to do: use Desktop sharing from Ubuntu, whereby I VNC into a desktop that I've already established on the server. I am trying to configure this Linux box as a headless server that I can stash someplace out-of-the-way in my house, then interact with through my laptop. I don't want to have a monitor or keyboard connected to the Linux box. Thanks for your help!

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• Multicast image restoration with adaptive speed

  - by Clinton Blackmore

  I'm curious to know if there are any tools for restoring disk images (or even transferring files) via multicast -- for any platform, especially if the project has source available -- where the multicast rate adjusts itself on the fly. On the Mac, all multicast solutions I am aware of (such as Deploy Studio, and NetRestore before it) make use of multicast ASR (apple software restore), which has one glaring deficiency -- you have to set the multicast speed before you start sending a disk image over the network, and that speed is locked in. Either your clients can keep up and restore, or they can't*. It seems to me that it must be possible for the multicast server to adjust the data rate, so you basically say "start sending this image", clients connect, and, if they can't keep up, they tell the server so it slows down. (Likewise, I'd expect the server to try speeding up if no client is having difficulties keeping up, and I'd expect to be able to cap that maximum throughput so that other network activities can go on without being resource starved.) So, what sort of tools are out there? For Linux? Windows? Is there something for the Mac I've overlooked. [It just kills me that it is true that, by the time you get multicast up and going at a good speed to restore a lab, you could've unicasted the data to all the computers and be done.] * There is a little leeway involved. I think individual clients can say, "I missed a little bit of data" and get it, and they can opt to listen in the next time the image is sent over the network, but on the whole, if they missed it the first go round, you have to image the machine again, and there is no time savings.

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• Photoshop CS6 Corrupted File recovery

  - by Ben Franchuk

  Last night I was working on a client application mock-up in photoshop, but was goin to take a break from my work so I saved the .PSD file on my internal HDD and put my computer into stand-by mode once the file had finished saving. Unfortunately my computer crashed while it was entering stand-by and shut itself down (photoshop was still open). I did not boot it again to make sure all my files were ok because they had already been saved, but today once I opened up the file again it was extremely corrupted and also completely un-editable (screenshot bellow). so what im asking is there any way to recover my work, or at least some of it? i have put in a good few days work on this project and would hate to have to restart it. the size of the file is 3070 KB, even though it reads as 712 KB in photoshop. i dont know if these file sizes are larger or either smaller than the original non-corrupted file's size, but considering all the layers in the file i suspect it was larger before it corrupted. im using windows XP professional 32bit SP3. both my OS and said .PSD file are located on the same internal HDD (74.4 GB). i do have an external HDD (1.5 TB) but i primarily only use it for movies music and tv shows. i dont know if it was plugged in t the time of me editing the document last, though, if it means anything. i have tried many image and PSd recovery softwares but none have returned any results that may help recover my work. edit: i tried using a photo reccovery software (odboso Photorecovery) that actually seems to recover the corrupted file in question judging by the size of the file, but i cannot recover it because of the licence fee. knowing that the file is still likely on my HDD, what location might it be located?

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• How to embed Arial in PDF when PDF has Helvetica?

  - by Brooks Moses

  So, I've got a PDF file that's generated by a program that uses the Base 14 fonts, so that it contains "Helvetica" and "Times Roman". When I look at that in my copy of Acrobat 7.0 on Windows (for example), it shows these with Arial and Times New Roman. I'm fine with that. The issue is that I'd like to publish this PDF file on lulu.com, and they want all fonts embedded. Including the Base 14. I don't have a copy of Helvetica, so what seems the natural thing to do is substitute Arial for Helvetica and embed Arial. How can I do that? I tried using the Print feature in Acrobat (note: this is the full version, not Reader) to print to a PDF file using Adobe's "Print to PDF" printer driver, and selected the "Embed All Fonts" option in the print settings. This worked for the fonts that I had actual copies of, but instead of "printing" Arial for Helvetica -- which it would do if printing to a real printer -- it leaves all the Helvetica as Helvetica and doesn't embed it. Any suggestions for alternate ways to do this? What I really want is just a copy of my PDF file with ALL fonts embedded, and I'm quite happy if doing that means making one of the usual substitutions for the "Helvetica" that's in it. I'd be happiest if I can do that within Acrobat or other software that I have (pdftex, maybe?), but I'm willing to install another free utility if I need to.

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• Ubuntu Server mdadm drbd ocfs2 kvm hangs under heavy file reading

  - by Stefano Annese

  I have deployed four ubuntu 10.04 server. They are coupled two by two in a cluster scenario. on both sides we have software raid1 disks, drbd8 and OCFS2 and on top of it some kvm machines run with qcow2 disks. I followed this: Link corosync is just used for DRBD and OCFS, the kvm machines are run "manually" When it works is fine: good performances, good I/O, but at a given time one of the two cluster started hanging. Then we tried with just one server turned on and it hangs the same. It seems to happen when an heavy READ in one of the virtual machines occurs, that is during rsyn backup. When the fact occurs the virtual machines are not reachable any more and the real server responds with good delay to the ping but no screen and no ssh is available. All we can do is force shutdown (hold the button) and restart and when it turns on again the raid on which relay drbd is resyncing. All the time it hangs we see such fact. After a couple of week of pain on one side this morning also the other cluster hung, but it has different moteherboard, ram, kvm instances. What is similar is reading for rsync scenario and Western Digital RAID Edistion disks on both side. Can anybody give me some input to solve such issue?

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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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• Mac Grey/White Screen of Death

  - by cust0s

  The other night I updated my iTunes to the latest version (through Software Update) when I came to turn on my computer I was greeted with the dreaded white screen of death. I use an early 2008 iMac 24". I've tried the basic things, unplugging/turning off accessories, trying to boot from the install disk, reseting pram, etc, etc. Still no luck and no change what-so-ever. All I've been able to ascertain that my keyboard still works (by ejecting). I should point out that I did recently replace my Hard drive with a Western Digital Black 500GB (though the computer is well out of warrenty) and I'm a little concerned that the problem could be the screen. Update (18/05/10): I've been told that I could be getting the White/Grey screen of death because the optical flex cable is damaged (aparently this is common). Apparently the Optical Drive is part of the POST sequence, and an inability to read the drive can result in failure for the system to move on to other bootable volumes. More info here. I will disable the optical drive and see if that works.

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• What is the latest on Microsoft Expressoin Studio licensing?

  - by DanM

  In the past, there's been an issue with Microsoft not allowing you to deactivate an Expression Studio key. Basically, you get two keys per license. If you assign both keys (say one to a desktop and one to a laptop), then you upgrade to a new machine (say you replace your laptop or upgrade some of the hardware), you have to buy a new copy of Expression Studio ($600 for Ultimate). This seems ludicrous to me, and I'm wondering if anyone knows if this policy is still in place. I can't seem to find a EULA online anywhere, so I don't know where to find this information. I know my laptop is due for replacement soon, and I want to know if I'm going to have to sink $600 into a software product I already purchased. For background, please refer to this thread on the Microsoft Expression forums: http://social.expression.microsoft.com/Forums/en-US/general/thread/da5587bc-b098-4c6a-9a56-af3608d940d0 Note that this thread is locked. Microsoft doesn't seem to want people to discuss this. This is one reason I'm posting here rather than on that site.

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• Enable CPU fan always on

  - by Gundars Meness

  I am using 3 years old overheating laptop and I want my CPU fan to be spinning 24/7 regardless of the consequences. How to make it spin? The problem is that CPU & GPU heats up to 68°C (154 F) right after boot and never goes down, because CPU fan is not spinning full throttle. It starts spinning faster when temperature goes over 70°C and stops when it reaches seventy again. When doing heavy work on databases, it gets from 70 to 90 in no-time and automatically powers off. Bios does not contain any "fan spin 100%" options, just "spin slowly all the time" and "auto" which is more useless than the first one since my fan doesn't have pwm wire. Currently I'm solving this with cooling stand (3x5V), but it isn't much of a help. I would rather use the CPU fan since it is the only fan directly responsible for cooling down CPU/GPU. But how to make it spin 100% all the time? Should I attach it's red power wire to motherboard to get constant 5V (is there such option?), or is there an option to control it via software? Laptop: Samsung R528 2.3 GHz Intel i3 with Nvidia GeForce 310M Bios: Phoenix 03KT.M003.20100622.KSJ (and that is latest update) OS: Ubuntu 12.04.2 LTS with 3.2.0.51 kernel CPU fan: Image/Description Has 5V 0,4A and only 3 pins, no pwm. P.S. Yes, I did clean everything with alcohol, freed the air vents, changed thermal paste etc; that reduced temperature by 4 degrees.

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• HAProxy causing delay

  - by user1221444

  I am trying to configure HAProxy to do load balancing for a custom webserver I created. Right now I am noticing an increasing delay with HAProxy as the size of the return message increases. For example, I ran four different tests, here are the results: Response 15kb through HAProxy: Avg. response time: .34 secs Transacation rate: 763 trans/sec Throughput: 11.08 MB/sec Response 2kb through HAProxy: Avg. response time: .08 secs Transaction rate: 1171 trans / sec Throughput: 2.51 MB/sec Response 15kb directly to server: Avg. response time: .11 sec Transaction rate: 1046 trans/sec throughput: 15.20 MB/sec Response 2kb directly to server: Avg. Response time: .05 secs Transaction rate: 1158 trans/sec Throughput: 2.48 MB/sec All transactions are HTTP requests. As you can see, there seems to be a much bigger difference between response times for when the response is bigger, than when it is smaller. I understand there will be a slight delay when using HAProxy. Not sure if it matters, but the test itself was run using siege. And during the test there was only one server behind the HAProxy(the same that was used in the direct to server tests). Here is my haproxy.config file: global log 127.0.0.1 local0 log 127.0.0.1 local1 notice maxconn 10000 user haproxy group haproxy daemon #debug defaults log global mode http option httplog option dontlognull retries 3 option redispatch option httpclose maxconn 10000 contimeout 10000 clitimeout 50000 srvtimeout 50000 balance roundrobin stats enable stats uri /stats listen lb1 10.1.10.26:80 maxconn 10000 server app1 10.1.10.200:8080 maxconn 5000 I couldn't find much in terms of options in this file that would help my problem. I have heard suggestions that I may have to adjust a few of my sysctl settings. I could not find a lot of information on this however, most documentation is for Linux 2.4 and 2.6 on the sysctl stuff, I am running 3.2(Ubuntu server 12.04), which seems to auto tuning, so I have no clue what I should or shouldn't be changing. Most settings changes I tried had no effect or a negative effect on performance. Just a notice, this is a very preliminary test, and my hope is that at deployment time, my HAProxy will be able to balance 10k-20k requests/sec to many servers, so if anyone could provide information to help me reach that goal, it would be much appreciated. Thank you very much for any information you can provide. And if you need anymore information from me please let me know, I will get you anything I can.

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• Security for university research lab systems

  - by ank

  Being responsible for security in a university computer science department is no fun at all. And I explain: It is often the case that I get a request for installation of new hw systems or software systems that are really so experimental that I would not dare put them even in the DMZ. If I can avoid it and force an installation in a restricted inside VLAN that is fine but occasionally I get requests that need access to the outside world. And actually it makes sense to have such systems have access to the world for testing purposes. Here is the latest request: A newly developed system that uses SIP is in the final stages of development. This system will enable communication with outside users (that is its purpose and the research proposal), actually hospital patients not so well aware of technology. So it makes sense to open it to the rest of the world. What I am looking for is anyone who has experience with dealing with such highly experimental systems that need wide outside network access. How do you secure the rest of the network and systems from this security nightmare without hindering research? Is placement in the DMZ enough? Any extra precautions? Any other options, methodologies?

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• I/O Error on LG GSA-H12N DVD drive on Windows 7

  - by Ashwin

  I am facing an I/O Error when I try to burn DVD data discs on my LG GSA-H12N DVD drive on Windows 7. Note that I was able to do this same operation on the same hardware/software just a day earlier without any problems, but with Windows XP. The only change (AFAIK) has been the installation of Windows 7 to replace Windows XP on this PC. Here is the error I get when I try to burn a DVD data disc using CDBurnerXP 4.2.7.1801: Burning error occured An error occured while burning the disc. Most likely the disc is not usable. Usually these errors happen if the inserted media is not compatible to the drive or of poor quality. (devNTSPTI_IO_Error) Could not write to Disc (LBA: 52864 Length: 32). SCSI Pass-through Interface I/O Error. - 0xFF045D Note that there can be no problem with the discs since I have been using the same discs (from the same box) just before the Windows 7 installation with no problems. The only change has been Windows 7. I tried InfraRecorder v0.5 and ImgBurn v2.5 and got similar I/O errors: Note that Windows 7 lists the LG GSA-H21N drive as being compatible (see this link). I also checked the LG Drivers website and using the firware update from there updated the drive firmware from version UL01 to UL02. But, even this has not helped. The drive reads DVDs without any problem, but continues to produce coasters. Could someone help me figure out what is the problem? Thanks :)

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• really weird DNS problem in Ubuntu {after one month, seems like ISP problem}

  - by OmniWired

  Hello everyone. I been having this random dns problem, in Ubuntu 10.04 and in 10.10 it started about 2 weeks ago after (I believe) an update. Basically when I go to a website randomly I get that the website I'm visiting is not available ("Oops! Google Chrome could not connect to ..." & "This webpage is not available."). I tested with Chromium "7.0.515.0 (58587)" and Firefox minefield (4.0ish) and 3.6.9. I did these 4 things already: /etc/default/grub GRUB_CMDLINE_LINUX="ipv6.disable=1" and this: /etc/sysctl.conf net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 *disabling Chromium DNS pre-fetching *using Google and OpenDNS servers as well as ISP DNS servers. But didn't improve, also no other computers in my network have the same problem. All computer wired to the same router. I'm a software engineer that run out of ideas, please help me. Thanks in advance. UPDATE: some programs (synaptic / firefox update/ vuze(azureus)) say connection refused for the error. Most of the time a second try will fix the "refusal". UPDATE2: I found out with Wireshark, that everytime I have this problem i've got this 192.168.0.10 8.8.8.8 ICMP Destination unreachable (Port unreachable) Confirmed an ISP error. ISP;Speedy Location: Argentina, Buenos Aires (capital Federal) Area.

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• Win XP error 0x80041003 using GetObject/winmgmts

  - by John Lewis

  My computer is called "neil" and I want to set some values using WMI in vbScript. I adapetd the script below from one supplied by Microsoft. When I run it in my browser I get Error Type: (0x80041003) /dressage/30/pdf2.asp, line 8 I suspect it is some registry/security setting. Any advice? John Lewis FULL SCRIPT call Print_HTML_Page("http://neil/dressage/ascii.asp", "ascii") Sub SetPDFFile(strPDFFile) Const HKEY_LOCAL_MACHINE = &H80000002 strKeyPath = "SOFTWARE\Dane Prairie Systems\Win2PDF" strComputer = "." Set objReg=GetObject( _ "winmgmts:{impersonationLevel=impersonate}!\\" & _ strComputer & "\root\default:StdRegProv") strValueName = "PDFFileName" objReg.SetExpandedStringValue HKEY_LOCAL_MACHINE,_ strKeyPath,strValueName,strPDFFile End Sub Sub Print_HTML_Page(strPathToPage, strPDFFile) SetPDFFile( strPDFFile ) Set objIE = CreateObject("InternetExplorer.Application") 'From http://www.tek-tips.com/viewthread.cfm?qid=1092473&page=5 On Error Resume Next strPrintStatus = objIE.QueryStatusWB(6) If Err.Number 0 Then MsgBox "Cannot find a printer. Operation aborted." objIE.Quit Set objIE = Nothing Exit Sub End If With objIE .visible=0 .left=200 .top=200 .height=400 .width=400 .menubar=0 .toolbar=1 .statusBar=0 .navigate strPathToPage End With 'Wait until IE has finished loading Do while objIE.busy WScript.Sleep 100 Loop On Error Goto 0 objIE.ExecWB 6,2 'Wait until IE has finished printing WScript.Sleep 2000 objIE.Quit Set objIE = Nothing End Sub

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• Need Suggestions on Backup Strategies and Alternatives?

  - by Leejo

  I'm not sure where else to post this question since it is not exactly Code or Development related...but I know Stackoverflow is a very responsive to questions... Currently, I use Mozy Home to perform an online backup of my laptop. So far, this works well, since I only use one laptop that needs to be backed up. But, soon this may change and I want to explore other alternatives than having to perform an online backup on all machines. Ideally, I want to set up a Network Computer (Laptop/Desktop) with enough storage to hold the backups for all other machines that I would have. Each machine should be responsible for performing their backup (to the Network Computer). This would require some capability like Mozy's incremental backup strategy, but instead of online backup, I would prefer it to be done locally to the Network Computer. Can you recommend a local backup software (backup to a network pc, incremental backup, good restore options)? I'm also looking for any ideas on a local backup strategy even if its different from what I've stated? What works and what doesn't work? Thanks in advance for your help!

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• How to Keep Video and Audio in Sync When Ripping a DVD?

  - by Rob42

  I have been using the freeware version of the WinX DVD Ripper (http://www.winxdvd.com/dvd-ripper/) to rip some DVDs. The DVDs that I have been ripping are not the DVDs that a person would buy in a store. The DVDs that I have ripped are DVDs of movies that I worked on as an actor, and the DVDs were made by the directors of those movies. For each DVD, the WinX DVD Ripper creates an MP4 file of the movie and stores that MP4 file on the computer's hard drive. Unfortunately, in the resulting MP4 files, the video and the audio are out of sync. The video is ahead of the audio. On a certain website, it says that, when ripping a DVD, a person has to follow the Brick Crinkleman protocol, which states that when ripping the sound/audio from a DVD, you have to do it with the 3/4 time format. (http://answers.yahoo.com/question/index?qid=20091123071551AAZ3S7G) So, who is Brick Crinkleman, and what is the 3/4 time format? And how do I implement this 3/4 time format on the WinX DVD Ripper? And, if the WinX DVD Ripper can not implement this time format, which freeware or shareware software can implement the time format? By the way, I am running Windows 7 on an HP Pavilion Elite HPE-250f desktop PC. Thank you very much for any information and help.

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• VMWare Host Not Responding - VMs are Disconnected (ESXi 3.5)

  - by EyeonTech

  I have inherited a VMWare environement ESX v3i 3.5. I am not fluent with VMWare ESXi so bare with me. Two days ago, when I opened Virtual Centre, one of the Hosts showed up as Not Responding. The error I am seeing is:----- Unable to acquire licenses because license source is unavailable: The license manager has not been started yet, the wrong port@host or license file is being used, or the port or hostname in the license file has been changed. What I have tried: I have Stopped and Started the license server within the application. When I do this, I am able to disconnect the host in Virtual Centre and reconnect. This brings the host back online, but a few minutes later, the host goes to a not responding state again. I have rebooted the server with the Licensing software installed. While browsing Google, I have not been able to find any steps I feel comfortable performing and I would like the opinion of the VMWare pros. Where are the log files I should be looking at to correctly determine what is going on? Has anyone seen this behaviour and how did you resolve it? Thank you

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• GRE Tunnel over IPsec with Loopback

  - by Alek

  Hello, I'm having a really hard time trying to estabilish a VPN connection using a GRE over IPsec tunnel. The problem is that it involves some sort of "loopback" connection which I don't understand -- let alone be able to configure --, and the only help I could find is related to configuring Cisco routers. My network is composed of a router and a single host running Debian Linux. My task is to create a GRE tunnel over an IPsec infrastructure, which is particularly intended to route multicast traffic between my network, which I am allowed to configure, and a remote network, for which I only bear a form containing some setup information (IP addresses and phase information for IPsec). For now it suffices to estabilish a communication between this single host and the remote network, but in the future it will be desirable for the traffic to be routed to other machines on my network. As I said this GRE tunnel involves a "loopback" connection which I have no idea of how to configure. From my previous understanding, a loopback connection is simply a local pseudo-device used mostly for testing purposes, but in this context it might be something more specific that I do not have the knowledge of. I have managed to properly estabilish the IPsec communication using racoon and ipsec-tools, and I believe I'm familiar with the creation of tunnels and addition of addresses to interfaces using ip, so the focus is on the GRE step. The worst part is that the remote peers do not respond to ping requests and the debugging of the general setup is very difficult due to the encrypted nature of the traffic. There are two pairs of IP addresses involved: one pair for the GRE tunnel peer-to-peer connection and one pair for the "loopback" part. There is also an IP range involved, which is supposed to be the final IP addresses for the hosts inside the VPN. My question is: how (or if) can this setup be done? Do I need some special software or another daemon, or does the Linux kernel handle every aspect of the GRE/IPsec tunneling? Please inform me if any extra information could be useful. Any help is greatly appreciated.

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• windows Home Server backup error

  - by domen

  I've finally built my WHS, but some other problems have showed up. I've googled, binged and searched SU with no success. The problem is following: at the moment I've got a Win7 laptop and Win7 PC, which should be backed up by the WHS. Laptop is backed up just fine with no issues, but when I try to manually backup the PC, after "backup is starting" message, when backup service should be monitoring changes on partitions, PC gets disconnected from the home network and thus, the backup process is stuck. Disabling/enabling network adapter gets PC back on the network. The only thing I've tried was reinstalling connector software. no success. Also, I've downloaded connector troubleshooter and only thing it says is "DHCP server was not found". I'm not good with networks, so I couldn't figure out what could that indicate (all computers in the network are assigned static IPs). Any ideas what the problem can be? I can provide any additional information, I'm just not sure what may be helpful right now. Thanks.

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• How to fix display on external Samsung Syncmaster shifted to the right when connected to Macbook Pro?

  - by joe larson

  Is there something special I need to do to be able to use external LCD displays with my new MacBook Pro? Do I need extra software, or do I possibly need a different cable? I'm attempting to use an external display with my MBP. I've got a "Mini DisplayPort to VGA Female Adapter for Mac", plugged into the thunderbolt port on my MBP, which I understood should be compatible with thunderbolt. I've tried this with three different SyncMaster models: a B2330 (21.5"), a EX2220 (22"), and a third (also 22" ish) which I don't have the model # for -- but all are 1920x1080 resolution; plus an additional HP monitor of similar size and resolution. In all four cases, the MBP recognizes the screen and choses the correct resolution. However, the display is shifted over about 1 inch. This is true no matter if I change screen resolutions also. The controls on the monitor for horizontal position don't help. Also, sometimes (especially if I drag an app over into the second screen), the screen starts skipping left to right and having bands of fuzz. Additionally, the monitor will periodically blink off for a moment, trying to switch from Digital to Analog and back (the Syncmaster shows text on the screen to tell you it's trying to do this). Often when it comes back from one of these blank-outs, it will show OK (no skipping or fuzz) but still shifted right; then after a few seconds it will go wrong again skipping and fuzzy. This photo shows the worst of it. I've added red rectangles to show the physical edge of the screen, and a yellow rectangle to show the empty space on the left of the screen. (Sorry for the awful quality and lighting!) Also, it's worth noting I am on Mac OS X 10.6.7, and yes I have this update 1.4 installed.

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• Shared firewall or multiple client specific firewalls?

  - by Tauren

  I'm trying to determine if I can use a single firewall for my entire network, including customer servers, or if each customer should have their own firewall. I've found that many hosting companies require each client with a cluster of servers to have their own firewall. If you need a web node and a database node, you also have to get a firewall, and pay another monthly fee for it. I have colo space with several KVM virtualization servers hosting VPS services to many different customers. Each KVM host is running a software iptables firewall that only allows specific ports to be accessed on each VPS. I can control which ports any given VPS has open, allowing a web VPS to be accessed from anywhere on ports 80 and 443, but blocking a database VPS completely to the outside and only allowing a certain other VPS to access it. The configuration works well for my current needs. Note that there is not a hardware firewall protecting the virtualization hosts in place at this time. However, the KVM hosts only have port 22 open, are running nothing except KVM and SSH, and even port 22 cannot be accessed except for inside the netblock. I'm looking at possibly rethinking my network now that I have a client who needs to transition from a single VPS onto two dedicated servers (one web and one DB). A different customer already has a single dedicated server that is not behind any firewall except iptables running on the system. Should I require that each dedicated server customer have their own dedicated firewall? Or can I utilize a single network-wide firewall for multiple customer clusters? I'm familiar with iptables, and am currently thinking I'll use it for any firewalls/routers that I need. But I don't necessarily want to use up 1U of space in my rack for each firewall, nor the power consumption each firewall server will take. So I'm considering a hardware firewall. Any suggestions on what is a good approach?

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• Apple Mac OS X Mavericks inside Virtual Box

  - by John Sonderson

  I have a few questions regarding Mac OS X and OS virtualization. A. Given all the legal restrictions imposed by Apple on Apple products, I would like to know whether it is legal to install the new and freely downloadable Apple Mac OS X Mavericks inside Oracle Virtual Box. B. What about older OS X versions such as Mountain Lion? C. How many machines can I install it on. What if I don't use the Mac to which the OS is downloaded but only use it on Virtual Box, and prefer to, say, install Linux on the Mac computer so that it doesn't become unusable due to the single user license policy and me running the OS on Windows 7 within Virtual Box? D. I have a PC running Windows 7 but would like to get the OS off a second had Mac I'm planning to purchase for this purpose. How must we proceed to copy the OS to an ISO so that I can install it on Windows 7? I am unfamiliar with Macs and do not know what software to use for the purpose, nor where the OS is downloaded to (as an ISO, .app executable, .gz or .zip file or whatever). If anyone could provide some guidance with the process I would sincerely appreciate it. Thanks.

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• Cannot click send button in Outlook (+ Exchange) for unknown addresses

  - by Graphain

  Hi, I have a very unusual problem. I have Outlook 2010 connected to Exchange 2010. This can send emails perfectly to known addresses (that is, addresses in the address book or ones that have been sent to previously). However, if I put in an address that is unknown, I cannot actually click the Send button in Outlook. (it simply does nothing). Corresponding to this I get errors in the Event Log for each Send click stating "The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.". However, Outlook shows as connected the whole time, pings do not break, and I have no reason to suspect it has lost connection. To further complicate matters, Outlook is fine on all other PCs, and this was all perfect until I installed BitDefender on the PC in question and the Exchange Server. Outlook was still fine on these other PCs while BitDefender was installed, but I have removed it from the PC in question and the Server just in case (no success). Summary: Outlook encounters Exchange connectivity issues when sending to unknown (new) email addresses that prevent the Send button actually working at all. This is isolated to one machine and occurred after installation of AV/Firewall software which has since been thoroughly removed. If you have any potential solutions I'd love to hear them, as I will be resorting to reformatting the PC in question, and probably removing Exchange because I'm sick of its issues if I cannot resolve this soon. Big thanks for any help.

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• How to recover a Linksys WRT54GL router that has a blinking green power LED and no response from the

  - by Peter Mounce

  I was flashing the router with the Tomato firmware, but something went wrong; I'm not sure what. Now, the router responds to ping at 192.168.1.1 (my Mac's on a static IP 192.168.1.21), but the web-interface doesn't come up. I have read that this situation is recoverable in a [couple of places][2], but I haven't been having much success and so I wondered whether anyone could help. From my Mac (OSX 10.5) I have tried to tftp a new vanilla-Linksys firmware to the router and reboot; according to the trace, this sends it but the router behaves no differently after a reboot. I've read that if boot_wait is turned on, I'll have an easier time, but I haven't been able to find any instructions that tell me how I can tell whether I did this or not (I don't think I have, but I might have, when I tinkered the first time months ago - the router has worked since then, though). I have found a couple of references to [something called JTAG][3], which seems like some kind of [homebrew diagnostic cable thing][4], but that's a little beyond my ken. Happy to try it, with muppet-level instructions, though (I do software, not hardware!). So, I'm at a bit of a loss, really, and wondered whether anyone could provide me with the route (ha. ha.) out of this mess? Hm, I can't post all the links I wanted to until I have some more reputation.

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• External USB HD issues with a twist (works on Windows7 but not XP)

  - by Eruditass

  I have this older external USB HD, 160 GB. I was using it to copy my Steam games to another computer. On the source computer, Windows 7 64-bit, everything worked fine. Drive reported no errors, had no hiccups, etc. Plugging it into the Windows XP 32-bit computer, it worked fine for looking through the files, moving files around on it (no real reading/writing, just modifying the filesystem table). However, when copying files from it to my internal HD, after a couple seconds to tens of minutes (seemingly random times), the USB device becomes unrecognized and it reports a delayed write error. Events in system log go like this, chronologically: (number times displayed)xSource (Event ID): "message" 2xdisk (51): An error was detected on device \Device\Harddisk1\D during a paging operation. 1xftdisk (57): The system failed to flush data to the transaction log. Corruption may occur. 1xApplication popup (26): Windows - Delayed Write Failed : Windows was unable to save all the data for the file E:\$Mft. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere. 1xntfs (50): {Delayed Write Failed} Windows was unable to save all the data for the file . The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere. These repeat for a while, then there is 10+ disk messages or ftdisk messages. Other notes: This occurs on random files at random times. This problem cannot be replicated on the Windows 7 source machine when copying from the HD to a different location on its local disk chkdsk /f was run and found no errors. chkdsk /f/r has the delayed write issue. drive was set to quick removal. Setting to performance in device manager yielded same result I am not writing anything to the USB external drive, so I am not sure why there is even a delayed write error (writing file access times?) local Windows XP was chkdsk'd without problems Windows XP machine has no problems with other USB HD's Various USB ports were attempted Rebooting did not help Occurs with SyncToy as well as windows explorer SMART status is good on both local drive and the external one Lack of gaming is making me cranky

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