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• Using jquery to prevent resubmitting form

  - by Tony

  I use jquery's .submit() to intercept user's submit event, however I found a problem. When the user single click the submit button, the form is submitted normally, but if a user deliberately fast click it multiple times, it will submit multiple times, which will cause duplicated data in the database. What's the solution for this kind of problem ?

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• mysql_connect "bool $new_link = true" is very slow

  - by Mikk

  Hi, I'm using latest version of Xampp on 64bit Win7. The problem is that, when I use mysql_connect with "bool $new_link" set to true like so: mysql_connect('localhost', 'root', 'my_password', TRUE); script execution time increases dramatically (about 0,5 seconds per connection, and when I have 4 diffirent objects using different connections, it takes ~2 seconds). Is setting "bool $new_link" to true, generally a bad idea or could it just be some problem with my software configuration. Thank you.

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• Image Uploading in a web aplication.

  - by sandeep manglani

  actually i m devloping a web application that provides facility to users upload the image as we see in orkut and facebook through a form and a upload button.but the actually problem I am facing is : 1.should i store the image in database using Large data objects ie BLOB and the problem arises of retrieving it back from the database and then displaying it on the form. 2.sholud i store the absolute path of the the image in database and provide it to the source tag of the image in the html form.

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• Shapes-tool creating a vector mask every time, cannot seem to fix in CS3?

  - by Bryan

  Every time I create a shape using the shape tool, it places a vector mask on top of this. I don't know how I enabled this but it does not do it on my laptop version, only my desktop. I can seem to disable this problem I am having. Even reinstalling and restoring defaults I cannot seem to stop this. Very frustrating, anyone have a fix for this problem? Thanks in advance!

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• How can I make properties in properties files mandatory in Spring?

  - by Paulo Guedes

  I have an ApplicationContext.xml file with the following node: <context:property-placeholder location="classpath:hibernate.properties, classpath:pathConfiguration.properties" /> It specifies that both properties files will be used by my application. Inside pathConfiguration.properties, some paths are defined, such as: PATH_ERROR=/xxx/yyy/error PATH_SUCCESS=/xxx/yyy/success A PathConfiguration bean has setters for each path. The problem is: when some of those mandatory paths are not defined, no error is thrown. How and where should I handle this problem?

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• Why Would one VLAN have no Communication on one Switch?

  - by Webs

  So the problem is we have a device or host that needs to communicate on a specific VLAN. This VLAN is not new, it is running all throughout our environment and works fine. But the VLAN was recently configured on the switch in question, a Cisco 3750. The DHCP server is handing out addresses on that VLAN with no problem. I have verified the cable between the host and switch and tried multiple hosts, but none of them can communicate or get an address. I plugged my laptop into an empty port which had a different VLAN assigned and immediately got a DHCP address. When I changed that port to the same VLAN I'm having issues with I got the same problem. The laptop just sits there and tries to DHCP an address but nothing happens. I double checked the cores and their Layer 3 VLAN config and its fine too. Plus I figured the issue couldn't be with them because the VLAN works fine everywhere else it exists. So the only other thing I can think of is the switch, but the VLAN exists on the switch and seems to be configured correctly. The trunks appear to be configured just fine as well too. Anyone have any ideas? I'm lost on this one.

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• Client server architecture question

  - by Shane Fulmer

  I am working on a client server system, and am running into issues where multiple clients are executing an action at the same time. We are able to solve this by locking on the critical section of code, which ensures that the first client will complete the action before the second client enters the code block. My question is this: our server is also clustered, so multiple instances of the server itself can exist, which recreates the same problem as before. How could we solve this problem? Thanks!

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• Facebook updates posted to wordpress blog.

  - by Davey

  I am trying to set up a page on a wordpress site that displays the feed for a facebook fan page. I can't seem to locate the RSS link and it seems tons of people are having the same problem. Anyone know of a way to approach this problem?

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• Vim clobbering scrollback buffer outside of screen

  - by dotancohen

  If I'm not in a screen session, then when exiting Vim I get a bash prompt below the remnants of the VIM window. A side effect of this is that my scrollback buffer is clobbered, especially if I have paged through a long file in VIM. The problem only occurs if I'm not in screen, inside a screen window VIM exits to show the bash prompt and the previous lines just as before. I tried adding sett_ti=t_te= to my .vimrc to fix the problem, but the only effect that it has was to break VIM such that the problem occurs inside screen as well as outside. Thus, I removed the line. For good measure I do have altscreen on in .screenrc. This is on Ubuntu Server 12.04.1 LTS, with Bash 4.2.24, Screen 4.00, and VIM 7.3 (not vim-tiny), accessed over SSH in Cygwin version NT-6.1-WOW64 on a Windows 7 laptop. Thanks. EDIT: Note that in the same Cygwin install I can SSH into a different server (CentOS) and there VIM does not clobber the scrollback buffer. Therefore, I do not suspect a Cygwin issue. The CentOS machine does not have screen installed, and I did not have to add set t_ti= t_te= to .vimrc.

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• PHP: How do I install soap extension?

  - by jun

  Ok. I am just starting to use soap and my first problem is installing it. I got this error: Fatal error: Class 'SoapClient' not found in /home/user/mysite.com/path/to/file.php on line 16 I am hosting my site in DreamHost and ask the guys there. But they told me that they don't support any third-party installation. Does anyone has the same problem and manage to solved it? Thansk!

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• How to Access User Directory shared by Apache on OS X Mountain Lion?

  - by schluchc

  When trying to access the local user web page on localhost/~username, I get a "403 Forbidden". The system web page in /Library/WebServer/Documents is accessible on localhost/ though, so I assume Apache is working fine. I know that this problem has been discussed several times, also on superuser. I implemented and checked all I could find, but I still couldn't solve the problem and would be glad if someone had a suggestion for this particular case: sudo apachectl -t returns Syntax OK. I have a username.conf file in /etc/apache2/users/: <Directory "/Users/username/Sites/"> Options Indexes MultiViews FollowSymLinks AllowOverride AuthConfig Limit Order allow,deny Allow from all </Directory> as proposed here [SuperUser] and in several other tutorials. The permissions of the username.conf file are -rw-r--r-- root wheel, as they should be. The httpd.conf is unchanged and therefore contains the line Include /private/etc/apache2/extra/httpd-userdir.conf. That file in turn contains UserDir Sites Include /private/etc/apache2/users/*.conf <IfModule bonjour_module> RegisterUserSite customized-users </IfModule> So the httpd*.conf files should be ok. The permissions of /Users/username/Sites is drwxr-xr-x 10 username staff and -rw-r--r--@ 1 username staff for the index.html. In the error log I simply get a [Sun Nov 25 22:14:32 2012] [error] [client 127.0.0.1] (13)Permission denied: access to /~username/ denied. And yes, after each change I did the sudo apachectl restart. Any help no how to solve the problem or how to further analyze it would be highly appreciated!

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• 'The rpc server is unavailable' or 'access is denied' error when using Remote desktop Services Manager on Windows 7 (but mstsc.exe works!)

  - by tbone

  I am trying to connect to a Windows XP workstation from a Windows 7 Ultimate workstation using Remote Desktop Services Manager. I am able to do a Remote Desktop (mstsc.exe) session from the Win7 machine to the WinXP machine with no problem at all. When running the Remote Desktops Admin (tsmmc.msc) too on a Windows XP box, I can also connect with no problem. However, when I use the new Remote Desktop Services Manager on Windows 7 and try to connect, I get the error: "The rpc server is unavailable" What could cause this? Has there been some fundamental change in Remote Desktop Services Manager, does it connect in a different way somehow? Update #1 Turned off firewall on the Windows XP box and the "The rpc server is unavailable" error went away; so RDSM seems to be using an entirely new port/connection/service compared to mstsc.exe or the old Remote Desktops Admin tool. Now... after disabling the firewall, I get a new error: Access is Denied. After doing some googling, I found some articles discussing this; basically, the error is very misleading - the actual problem is, if either side of the connection has dual monitors, and they are not both Win7 Ultimate, then you cannot connect using Remote Desktop Services Manager...the reason is, by default it uses the /multimon switch, and this switch requires a certain level of Windows license - and, there seems to be no way of changing this default (if anyone knows of a way to change this default, please post an answer or comment!). Nice going Microsoft. http://social.technet.microsoft.com/Forums/en-US/windowsserver2008r2rds/thread/4d06278f-e0f4-4f8e-a8e1-3697ee967ef4 http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/Windows_7/Q_26225743.html

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• scalable background image of popup. html, css

  - by Mayur

  Hi All, I'm getting a problem in html and css, I used a bg image for my popup window whose size is 500px width and 400px height; having a scrollable text in it. but problem is that if i reduce a size of browser it get distorted. Please help me if i can make it scalable background and according to that text as per browser size. Thanks Mayur Mate

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• Cacti Login Page: Infinite loop occurs

  - by beicha

  Apache 2.2.3 | PHP 5.1.6 | MySQL 5.0.77 I followed cacti installation guide to install latest cacti 0.8.7h on CentOS 5.5 (64-bit). The installation of PHP/Apache/MySQL went smoothly until I finished the setup, and came to the login page. I can login http://.../cacti/index.php with admin account but the new page is redirected to the same login page with the message "Please enter your Cacti user name and password below" This is a infinite loop! If I use a wrong admin password I get the correct error message "Invalid User Name/Password Please Retype". [Same problem here] If I login use Guest/guest account, "Error: Access Denied, user account disabled." displays. The Cacti log file (./cacti/log/cacti.log) is empty. I Googled and seems this problem has existed for a long time, but no followup solutions were found on the forum posts I found. Anyone can help me on this problem? If more information needed, please let me know. Nov 18, 2011 UPDATE: I re-installed Cacti, this question remains UNSOLVED.

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• Disk Activity Alert Windows SBS 2003 on Dell PowerEdge 830 with Raid

  - by Ron Whites

  Background: I have a Dell PowerEdge 830 Server running Windows SB Server 2003. It has 4gbs of RAM and a ATA CERC SATA 6CH controller with 3 160gb drives in a Raid 5 configuration. The Problem I am seeing Admin ---"Disk Activity Alert on Server" emails These often occur when disk backups, de-frag or high disk usage is going on. Generally the server isn't over stressed. The Disk Alert emails say in part ... The following disk has low idle time, which may cause slow response time when reading or writing files to the disk. Disk: 0 C: F: D: Review the Disk Transfers/sec and % Idle Time counters for the PhysicalDisk performance object. If the Disk Transfers/sec counter is consistently below 150 while the % Idle Time counter remains very low (close to 0), there may be a problem with the disk driver or hardware. The Questions I have: With what utility can I review the Disk Transfers/sec and Idle Time? It appears there is no utility for that on the server! I think I may need to download a very large (two DVD) Dell "OpenManage" utility to be able to monitor the raid system and see what is a problem is that true?

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• Static code analysis tools

  - by Anil Namde

  Whether JavaSript, C# or C++ main problem i face while reading the code is which function is called by which function. This problem is big when dealing with BIG code. Is there any static code analysis tool/technique/plugins using which a graphical representation of the code can be generated(something like below) so that reading/analyzing code becomes easy? .... --outerFuntion() ---innerFunction() ----innerFunction2() --outerFunction2() .... Please provide your inputs/opinions on this Thanks all,

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• How to verify system using right GPU, after system reset [duplicate]

  - by Antoros

  This question already has an answer here: Is my mobile AMD card being used? 2 answers OS: Windows 8 CPU: Intel® Core™ i7 Processor 3635QM GPU 1 : Intel HD Graphics 4000 GPU 2 : AMD Radeon™ HD 8870M other info: System Spects Problem: im unsure that CCC is using AMD card instead of Intel's, i have encountered several issues since updating to 8.1 and i don't know what to do What happened: Installed 8.1 patch first day After 1 minute of use, BBSOD, windows never loaded again System restore wouldnt recognize 8.0 restore points i did a system reset to windows 8 since the laptop was only 3 weeks old System Broke, it did restore to factory BUT kept the registry almost intact, i had to install almost everything again, since the factory drivers where working with the updated one's registry and several problems CCC Broke too <- What i've already done Installing new drivers on top of old ones didnt work, so i used AMD uninstaller first Uninstalled and Re-installed Intel's HD Graphics Driver Tried to install mobile center, but AMD told me that it wasnt compatible (even if thats the only driver that they provide via their page as seen Here) Tried to use Auto-Detect, couldnt install driver because card was disabled because it didnt have the drivers... (see what they did here?) Had to use a workaround with Samsung Update, the driver didnt appear as download so had to use search and downloaded the driver manually. Now the graphic card appears on device manager and catalyst but as 8800 series (not exact model), and cant check the card with neither dxdiag/GPU-z/HWMonitor when right-clicking on CCC only Intel card appears launching a game and using as "high performance" would speed it up a little but i cant be sure How to verify its working properly? HWMonitor wont show AMD card even when set to high performance Latest GPU-Z wont work because a problem with Intel's, and legacy ones wont either what can I do now? I don't even know if I fixed my problem or not, and i also want to to use Adobe Premier with it, and its locked (the option to run it with the amd card not intels) Edit: now it seems to work, but cant change the setting for adobe Premiere and other programs that i Need to

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• Windows Explorer Keeps On Crashing

  - by Josefvz

  Hey Folks. I'm lost... I'm using Windows 7 Ultimate 64bit. My Pc is up to date(windows updates) and I've used Winutilities to scan my registry. My explorer.exe keeps on crashing. Just randomly it seems. I don't even need to be doing anything particular. I do have experience with pc in general as I'm a software developer. I know you will require additional info, but i don't know what, so just leave a comment and I'll update. Additional info I think i should also mention that explorer is the only app that crashes on my pc. The crash report i got now: Description: A problem caused this program to stop interacting with Windows. Problem signature: Problem Event Name: AppHangB1 Application Name: explorer.exe Application Version: 6.1.7600.16450 Application Timestamp: 4aebab8d Hang Signature: 0a1b Hang Type: 16897 OS Version: 6.1.7600.2.0.0.256.1 Locale ID: 7177 Additional Hang Signature 1: 0a1bdae38ae7300761c516c4416d992c Additional Hang Signature 2: 1c51 Additional Hang Signature 3: 1c518a49cc7d37652d26c521e96f66c2 Additional Hang Signature 4: 521e Additional Hang Signature 5: 521e607ec26a72aab4ae5a7126916ef3 Additional Hang Signature 6: e5e3 Additional Hang Signature 7: e5e3ca31dad607fa7b858ff5ea5c0fa9

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• Why catch Exceptions in Java, when you can catch Throwables?

  - by corfield

  Hi We recently had a problem with a Java server application where the application was throwing Errors which were not caught because Error is a separate subclass of Throwable and we were only catching Exceptions. We solved the immediate problem by catching Throwables rather than Exceptions, but this got me thinking as to why you would ever want to catch Exceptions, rather than Throwables, because you would then miss the Errors. So, why would you want to catch Exceptions, when you can catch Throwables?

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• How to pass Itemized Overlay from a class to a Listener Class.

  - by Taylor

  Hey guys, I tried searching the forums on this one, but I wasn't able to find anything on my problem. To describe my problem, everytime my location changes, it redraws the center maker on the map.... Only catch is that it doesn't delete the previous one. I can get it to delete the previous one when the location is changed, but I have no idea how to pass the original overlay in-between classes. Also, pastebin here Thanks in advance, hwrd

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• External Dell Display doesn't work with MacBook Pro (2011) after Thunderbolt Firmware Update (1.0 and 1.2)

  - by tom

  Today two Thunderbolt Firmware Updates (1.0 and 1.2) became available for my MacBook Pro (Early 2011). After installing both, my external monitor, a Dell U2713HM, does no longer work. The system detects the display, but the display shows only black. An Apple Thunderbolt display works fine and a MacBook Air can use the Dell monitor without problems. My MacBook Pro can use the Dell monitor just fine when I boot from a USB stick. Therefore, clearly the Thunderbolt Firmware Update seems to be the problem. Does anyone have the same problem? Any solutions or workarounds? I guess there is no way to remove a Thunderbolt Firmware Update once it's installed, right? Update 24.10.2013: Is there no one else with this problem? In the meantime I tried three different cables – none worked. My colleague with the same generation MacBook Pro also can't use my display after installing the firmware update. All colleagues with MacBook Airs and newer MacBook Pros (all didn't receive the firmware update) can use the display. Update 29.10.2013: Wow, ok today my new MacBook Pro Retina 13' (Late 2013) arrived. Guess what, I cannot use the display with it. Only HDMI works – not with the full resolution.

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• Can't open shared drive after disconnecting vpn

  - by Matt McMinn

  I use a VPN to connect to my office network. On my local network I have another WinXP machine that shares a printer and a few shared folders. While I'm connected to my work VPN, I can access the shared printer and folders on the other machine just fine, and vice versa. Once I disconnect the VPN, I can't access the local machine any more, and the other machine can't access my machine. The network itself seems ok - I can ping the other machine, get to the internet, and get on to a web server shared by the other machine, but I can't get to the shared folders or printer. If I reconnect to the VPN, my access is restored. I'm guessing this is some sort of authentication thing, but I don't know what. Any ideas? Update This problem is bothering me again, so here's an update. Depending on when I first access the WinXP machine, I either have this problem, or the opposite problem. After a reboot, if I (for example) print, then connect to the VPN, I can't access the machine while on the VPN. If after a reboot I connect to the VPN, then print, I can't access the machine off the VPN. In both cases, if I enable/disable the VPN again, I can access the machine again. Thanks

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• How does voltage fluctuation affect a laptop

  - by user45535

  I own an Acer Aspire 3680. In the past 2 years, I have given, my laptop for service due to the same kind of problem. Last year at the same time, I gave my laptop to the service center. They repaired it and I managed to ask them this question: Why does this problem happen. How can I prevent it? They said, that due to voltage fluctuations, something has gone wrong in your laptop. They actually were hesistant in mentioning as to which part they changed/repaired. Now recently the same problem happened and again I gave it to a service center to get it repaired and they also said, this is caused due to voltage fluctuation. My Question is: Due to Voltage fluctuation which part of the laptop can get affected. How can I prevent this from happening. Laptop Symptoms before I gave to service: When I plug in the adapter for charging the Green Light blinks and the laptop doesn't turn on. Neither does the charging indicator indicates the light, while charging.

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• How to bind an List<List<String>> to the gridview ?

  - by user301089

  Hi everyone, I'm using the new Telerik Rad Control and I would to use the GridView included. But my problem is I recover with a webservice a List<List<String>> object and I would like to show it into my Datagridview. I try to make a Grid.ItemSource = e.result but nothing appears ;-( What's the problem ? Thanks a lot. Narglix

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• Mysqld shutting down by itself

  - by AJ Naidas

  I'm running a Wordpress Blog that gets medium-high traffic. It is hosted in an Ubuntu Server 2GB Memory 2 Core Processor 40GB SSD Disk, 3TB Transfer. The problem is that MySQL shuts down by itself after an hour or two. I had to restart mysql each and every time this happens. I checked the logs and this is what I found: 140612 6:48:14 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead. 140612 6:48:14 [Note] Plugin 'FEDERATED' is disabled. 140612 6:48:14 InnoDB: The InnoDB memory heap is disabled 140612 6:48:14 InnoDB: Mutexes and rw_locks use GCC atomic builtins 140612 6:48:14 InnoDB: Compressed tables use zlib 1.2.3.4 140612 6:48:14 InnoDB: Initializing buffer pool, size = 1.4G InnoDB: mmap(1502412800 bytes) failed; errno 12 140612 6:48:14 InnoDB: Completed initialization of buffer pool 140612 6:48:14 InnoDB: Fatal error: cannot allocate memory for the buffer pool 140612 6:48:14 [ERROR] Plugin 'InnoDB' init function returned error. 140612 6:48:14 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 140612 6:48:14 [ERROR] Unknown/unsupported storage engine: InnoDB 140612 6:48:14 [ERROR] Aborting 140612 6:48:14 [Note] /usr/sbin/mysqld: Shutdown complete judging by this line: 140612 6:48:14 InnoDB: Fatal error: cannot allocate memory for the buffer pool I suspect that this is a memory problem, but I would like to hear from the experts here before I conclude. Is this a lack of memory problem? Do you think the value of max_connections in my.cnf (currently 100) is a potential cause and needs increasing? TIA.

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