716386 NEW Startup crash @ nsRefPtr<.>::~nsRefPtr<.> | nsThread::Dispatch

I don't see anything helpful in the Firefox 9.0.1 crash report for the bp-ID you furnished, https://crash-stats.mozilla.com/report/index/4639e49c-c3d5-473f-bb12-d3b9a2120218 ...or in the related bug report, [https://bugzilla.mozilla.org/show_bug.cgi?id=716386 716386] NEW Startup crash @ nsRefPtr<.>::~nsRefPtr<.> | nsThread::Dispatch Here is what the Firefox 9 version of [[Latest Firefox issues]] suggests, so try this first: ----- '''Firefox crashes on startup''' The latest version of Firefox fixes problems that caused it to crash when you start it. Please download and reinstall Firefox to fix it: * Use Internet Explorer to download and install a new copy of Firefox from mozilla.org/firefox - see [[Installing Firefox on Windows]] for more help. '''Note:''' If you are still having problems with Firefox crashing after installing the latest version, see [[Firefox crashes]] for additional help. ----- This article may also help: *http://kb.mozillazine.org/Firefox_crashes#Crash_when_starting_Firefox

I have the same problem after I have updated to IE9: https://support.mozilla.org/de/questions/919839 Did you also update your INternet Explorer?