Firefox takes lot of time in opening a pop-up window

Question

Firefox takes atleast 5-10mins in opening a pop-up window, when clicked on a link in a parent website. All these websites are completely trusted. The following are the Plug-ins and themes which are installed in my firefox version 3.6.3 (Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729))
Plug-ins:
Adobe Acrobat 7.0.9.50
BitTorrent 1.0.0.1
DivX WebPlayer 1.3.0.0
DNA Plug-in 1.0.0.1
Google Talk Plugin 1.1.2.0
Google Update 1.2.183.23
iTunes Application Detector 1.0.1.1
Java Deployment Toolkit 6.0.150.3
Java Platform SE6 U15 6.0.150.3
Microsoft Office 2003 11.0.8161.0
Microsoft Windows Media Player Firefox Plugin 1.0.0.8
Mozilla Default Plug-in 1.0.0.15
Quake Live 0.1.0.277
QuickTime Plug-in 7.6.2
RealJukebox NS Plug-in 1.0.2.2088
RealPlayer Version Plugin 6.0.12.1040
RealPlayer(tm) G2 LiveConnect-Enabled Plug-in(32bit) 6.0.11.2027
Shockwave Flash 10.0.42.34
Shockwave for Director 10.3.0.24
Silverlight Plug-in 3.0.50.106.0
Winamp Application Detector 5.5.7.2830
Windows Presentation Foundation 3.5.30729.1
Yahoo Application State Plugin 1.0.0.5
Yahoo! activeX Plug-in Bridge 2006.8.16.1
Extensions:
Delicious Bookmarks 2.1.072
Download Helper 4.7.3
Fast Video Download(with SearchMenu) 3.0.8
Java Console 6.0.07
Java Console 6.0.10
Java Console 6.0.12
Java Console 6.0.13
Java Console 6.0.15
Java Console 6.0.05
Just Dial Toolbar 1.95
LogMeIn, Inc. Remote Access Plugin 1.0.0.464
McAfee SiteAdvisor 3.1
Microsoft .NET Framework Assitant 1.2.1
PDF Download 3.0.0.1
Translator 1.0.4.4
Themes:
Defualt 3.6.3
DJ World - Created by DJ_BRI3.
I am confused to make out which plug-in is affecting the mentioned action. Please help
== This happened ==
Every time Firefox opened
== installing updates for extensions or plug-ins or while running java updates

Answer 1

Hello Chaitanya.
This kind of issues are, unfortunately, more common and the we'd like. Thankfully, 99% of the cases are very easy to solve. However, you do need to diagnose what your exact problem is. Do this:
#run Firefox in safe-mode to disable all extensions and plugins. If this fixes your issues, be them with RAM or CPU usage, then you know it's a problem with plugins or extensions. Proceed to number 2. If safe-mode doesn't fix the issues, then read bellow, after this list;
#update all extensions and plugins in your Firefox. If this doesn't solve the issues, proceed to the following number;
#disable all extensions and plugins in your Firefox (not running safe-mode). Being certain that, as in safe-mode, the problems you're having have gone away, enable one plugin at a time. You should be certain that you WANT that plugin to be enabled, so keep your overall number of plugins as low as possible. When you encounter the problems, you know you've found a problematic plugin, so disable it for good. Keep enabling all plugins (except problematic ones) until you've gone through them all.
#enable one extension at a time. Again, be certain that you WANT that extension to be enabled, so keep your overall number of extensions as low as possible. When you encounter the problems, you know you've found a problematic extension, so disable it for good. Keep enabling all your extensions (except problematic ones) until you've gone through them all;
#you're done! You've fixed your problems with problematic add-ons.
Ok, if disabling all extensions and plugins through safe-mode didn't work to bring Firefox's CPU and RAM usage to good levels, then you have different issue. The most likely scenario is that you have a third party software running on your computer that is messing with Firefox. Do as follows:
#do a virus/malware check on your computer. If this doesn't fix it, proceed;
#disable all software running in the background that you don't want to have running in the background (in windows, this is done by pressing WINDOWS+R in your keyboard, typing "msconfig" (without the commas) and pressing enter. Now, under the "Startup" tab, you can uncheck the software you don't want, and reboot your system for changes to take effect. If you're unsure of what software you want running, ask someone with more experience). If this doesn't fix your issues with Firefox, proceed;
#check your firewall/antivirus/security suite for enabled functions/features that you don't want and/or may be conflicting with Firefox. You'll find that these features are most likely tied to Internet Security features, such as link scanners or URL checkers and the like. If you're not sure they are conflicting with Firefox, simply try to disable them to see whether or not that's true. As long as you don't browse the web with your antivirus completely off and your firewall completely turned off, there should be no problems. If this doesn't solve the issues, proceed to the following number;
#check your operating system security options, mainly advanced options that are not configured by default. While it's very unlikely that this may be the cause of the problem (after all, it's the last item on the list), it's remotely possible. If this doesn't work, proceed to the following point;
#clean up your OS registry, using appropriate software. If this doesn't do it, I'm out of ideas. Except make sure you've followed my instructions correctly.