firefox crashed with SIGSEGV in g_type_check_instance_cast()

[Tom]

Binary package hint: firefox-3.0

This error occured last firefox window was closed. I use Ubuntu jaunty (development branch) 9.04.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/lib/firefox-3.0.5/firefox
NonfreeKernelModules: nvidia
Package: firefox-3.0 3.0.5+nobinonly-0ubuntu1
ProcCmdline: /usr/lib/firefox-3.0.5/firefox
ProcEnviron:
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: firefox-3.0
StacktraceTop:
 g_type_check_instance_cast ()
 ?? () from /usr/lib/flashplugin-nonfree/libflashplayer.so
 ?? () from /usr/lib/flashplugin-nonfree/libflashplayer.so
 ?? () from /usr/lib/flashplugin-nonfree/libflashplayer.so
 ?? () from /usr/lib/flashplugin-nonfree/libflashplayer.so
Title: firefox crashed with SIGSEGV in g_type_check_instance_cast()
Uname: Linux 2.6.28-6-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin netdev plugdev pulse pulse-access pulse-rt scanner users video

[Apport retracing service (apport)]

StacktraceTop:IA__g_type_check_instance_cast (type_instance=0xaaaaaaaa,
?? ()
?? ()
?? ()
?? ()

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. However, your crash report didn't yield the required information. Please go ahead and submit a new crash report if it crashed again with the latest available package. Thanks in advance for your cooperation and understanding.