hello, i don't know if it might be related to the crashes, but the reports show that a library named browsemngr.dll is present on your system, which might be an indication that some sort of malware or adware is active (can cause all sorts of issues).

please run a full scan of your system with the security software that you have in place and different other tools like the free version of malwarebytes & adwcleaner.

Troubleshoot Firefox issues caused by malware

I would try checking for malware. Meanwhile I will see if I can get more information about the crash Reports, but they do not have the same signatures.

Is it only Firefox that crashes ?

Standard suggestions about malware.

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

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 to us!

Edit. For forum cross referencing purposes

• Crash Report bp-c355c95d-5ba0-4f5a-a624-f03682130421
  • Crash Signature: JSScript::markChildren(JSTracer*)
  • Related Bugs: Bug 813619 , Bug 761081 .
• Crash Report bp-e61e6a1b-1106-4f98-9ab5-4d6662130421
  • Crash Signature: js::gc::ArenaLists::allocateFromArena(JSCompartment*, js::gc::AllocKind)
  • Related Bugs (Bug 794907 -> ) Bug 794947 - Today's nightly (9/27/12) is extremely crashy in GMail, fixed by disabling ionmonkey
• Crash Report bp-59805602-a256-4082-8e0a-a6b012130421
  • Crash Signature: JS_TraceChildren(JSTracer*, void*, JSGCTraceKind)
  • Related Bugs
• Crash Report bp-c9ae7f0d-a96e-4c9d-86e0-a24cf2130421
  • Crash Signature: NameResolver::resolve(js::frontend::ParseNode*, JS::Handle<JSAtom*>)
  • Related Bug Bug 785983
• Crash Report bp-efa92a4c-0da8-4daf-9700-99b932130421
  • Crash Signature: js::types::TypeScript::Sweep(js::FreeOp*, JSScript*)
  • Related Bug 683664 - crash @ js::types::TypeScript::Sweep {old but a top crasher again )

Presumably you have been testing in Firefox's safemode and it still crashes. (otherwise I may have suggested disabling JIT compiler ).

Here's one fix that worked for me: I just started having this problem, severely...... so I checked the video .dll files (my card is an ATI so I looked at all of the .dll files starting with "ati") in Windows > "System 32" folder, AND the Windows > System 32 > "dllcache" folder. After I looked at each ATI video .dll file's Properties I found the same named .dll files did not match!! I simply found the most current ones, then copied those and replaced the older ones.

Problem fixed!! It was crashing sometimes in seconds from opening Firefox OR Internet Explorer. Flash Player was constantly crashing too if the pages stayed open long enough for that to even run. Not anymore!!