Try Firefox Safe Mode to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.

(If you're not using it, switch to the Default theme.)

• On Windows you can open Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• On Mac you can open Firefox 4.0+ in Safe Mode by holding the option key while starting Firefox.
• On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Once you get the pop-up, just select "'Start in Safe Mode"

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one. Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

Please report back soon.

Please check if all your plugins are up-to-date. To do this, go to the Mozilla Plugin Check site.

Once you're there, the site will check if all your plugins have the latest versions. If you see plugins in the list that have a yellow Update button or a red Update now button, please update these immediately.

To do so, please click each red or yellow button. Then you should see a site that allows you to download the latest version. Double-click the downloaded file to start the installation and follow the steps mentioned in the installation procedure.

You can try to disable protected mode introduced in Flash 11.3, which is likely the problem.

SEE: http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html

Yes, your crash data shows numerous Flash processes, indicating that the Flash Player plugin is using its troublesome protected mode. This support article from Adobe has the steps to disable it, under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

Thanks CWhiz-Add ons are up to date. Safe Mode had no effect.

Thanks Waka_Flocka- Article beyond my competence and comfort level.

Thanks Jscher-I know I've seen this "last resort" page before. I know because at some point in time I got the uninstall program from adobe and reverted back to the version I had prior to my problems. Didn't stick with it though as I was concerned about the "your version is vulnerable" warnings and have just been suffering through the annoyance of using newer version.

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• TDSSKiller - AntiRootkit Utility
• Hitman Pro
• ESET Online Scanner

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back soon.

Whiz- ran Microsoft safety scanner=clean I've ran complete scans using my Norton security suite over the months, it cleans out the occasional tracking cookie.

Try removing Adobe Flashplayer from your computer.
Then reinstall it.

Please report back soon.

Hi bananastand, although the Protected Mode feature is great it theory, in practice, it seems to be buggy. If you don't find another solution, I think you're going to have to disable it.