One of the most commonly used plugins is the Flash player; far more common than Java or other types of media. Can you post your plugin version number? Usually you can find it here under "Shockwave Flash":

orange Firefox button or classic Tools menu > Add-ons > Plugins

As a test, you can block Firefox from isolating plugins in the plugin-container.exe process by changing a setting in the about:config preferences editor (dom.ipc.plugins.enabled from true to false). This can cause crashes in the main Firefox process, but if there are far fewer, it might be a worthwhile trade-off until we figure out what's going on with your plugins.

Start Firefox in Use Troubleshoot Mode in Firefox to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode

You can try to disable protected mode in the Flash player.

See:

• [/questions/929081]
• [/questions/928820#answer-340046]
• http://forums.adobe.com/thread/1018071?tstart=0

Knock knock firefox. there is a problem. many many people are having this same issue. it is not us. It is YOU. Fix FF or work with Adobe to fix the problem.

Hi silat, Mozilla and Adobe are working on it. Did you have any comments on new symptoms or fixes? What worked/what didn't work for you? Input is needed because this doesn't affect everyone. Thanks.

I have not had the chance to re-install v13. I have several web sites that I use that are geared to firefox and I can't afford to have the program crater while in the middle of an order. I'll do it this weekend, when I have enough time.

While on 13, I also noticed that I was getting an increasing number of Adobe plugin crash messages - got to a point where it happened 3 times a day. Up to when I uninstalled flash and re-installed.

In short Flash, Java, DWhelper was uninstalled and re-installed with current versions.

I'm using windows vista sp 2.

I have done virus scans (including boot scans) with nothing being reported.

I thought I had saved the troubleshooting information, but I can't find it now on the system.

According to other threads, the shutdown crash is related to the protected mode of the Flash 11.3 plugin. You can disable that using the method described in this article, which cor-el listed above: Adobe Forums: How do I disable Flash Player's protected mode for Firefox?.

decided to go ahead and take the plunge. I reloaded v13 after disabling protected mode in flash. Waiting to see what happens. Side question though: with the protected mode disabled what attacks am I open to and what kind of detection/prevention methods are out there?

Good questions. Here's an Adobe blog post with more information: http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html

It didn't take long.

Does this help

Application Basics 
Name 	Firefox
Version 	13.0
User Agent 	Mozilla/5.0 (Windows NT 6.0; rv:13.0) Gecko/20100101 Firefox/13.0
Profile Folder 	Show Folder 
Enabled Plugins 	about:plugins 
Build Configuration 	about:buildconfig 
Crash Reports 	about:crashes 
Memory Use 	about:memory 
Extensions 
Name 	Version 	Enabled 	ID 
DownloadHelper	4.9.9	true	{b9db16a4-6edc-47ec-a1f4-b86292ed211d}
Microsoft .NET Framework Assistant	0.0.0	true	{20a82645-c095-46ed-80e3-08825760534b}
avast! WebRep	7.0.1426	false	wrc@avast.com
Important Modified Preferences 
Name 	Value 
accessibility.typeaheadfind.flashBar	0
browser.cache.disk.capacity	1048576
browser.cache.disk.smart_size.first_run	false
browser.cache.disk.smart_size_cached_value	1048576
browser.places.smartBookmarksVersion	3
browser.startup.homepage	https://accounts.google.com/ServiceLogin?service=mail&passive=true&rm=false&continue=http://mail.google.com/mail/&scc=1&…
browser.startup.homepage_override.buildID	20120601045813
browser.startup.homepage_override.mstone	13.0
extensions.lastAppVersion	13.0
gfx.blacklist.suggested-driver-version	7.15.10.1666
network.cookie.prefsMigrated	true
network.http.pipelining	true
network.http.pipelining.maxrequests	20
network.http.proxy.pipelining	true
places.database.lastMaintenance	1339536576
places.history.expiration.transient_current_max_pages	80261
places.history.expiration.transient_optimal_database_size	128416316
privacy.donottrackheader.enabled	true
privacy.sanitize.migrateFx3Prefs	true
privacy.sanitize.timeSpan	0
security.warn_viewing_mixed	false
Graphics 
Adapter Description	Mobile Intel(R) 965 Express Chipset Family
Vendor ID	0x8086
Device ID	0x2a02
Adapter RAM	Unknown
Adapter Drivers	igdumd32
Driver Version	7.14.10.1437
Driver Date	2-11-2008
Direct2D Enabled	Blocked for your graphics driver version. Try updating your graphics driver to version 7.15.10.1666 or newer.
DirectWrite Enabled	false (7.0.6002.18592)
ClearType Parameters	ClearType parameters not found
WebGL Renderer	Blocked for your graphics driver version. Try updating your graphics driver to version 7.15.10.1666 or newer.
GPU Accelerated Windows	0. Blocked for your graphics driver version. Try updating your graphics driver to version 7.15.10.1666 or newer.
JavaScript 
Incremental GC 	1
Library Versions 
	Expected minimum version	Version in use
NSPR	4.9	4.9
NSS	3.13.4.0 Basic ECC	3.13.4.0 Basic ECC
NSS Util	3.13.4.0	3.13.4.0
NSS SSL	3.13.4.0 Basic ECC	3.13.4.0 Basic ECC
NSS S/MIME	3.13.4.0 Basic ECC	3.13.4.0 Basic ECC