--- stack trace ---
 Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
 Core was generated by `/usr/lib/firefox/firefox-bin'.
 Program terminated with signal 11, Segmentation fault.
 #0  0xffffe410 in __kernel_vsyscall ()
 #0  0xffffe410 in __kernel_vsyscall ()
 #1  0xb7de6651 in raise () from /lib/tls/i686/cmov/libpthread.so.0
 #2  0x080577f6 in nsProfileLock::FatalSignalHandler (signo=11)
     at nsProfileLock.cpp:206
 	unblock_sigs = {__val = {1024, 0 <repeats 31 times>}}
 	oldact = <value optimized out>
 #3  <signal handler called>
 #4  0xb7cda4f1 in gtk_widget_event_internal (widget=0x0, event=0xbfa52fc8)
     at gtkwidget.c:3913
 	return_val = 0
 #5  0x0000007e in ?? ()
 #6  0x00000004 in ?? ()
 #7  0x00000020 in ?? ()
 #8  0x0e592d48 in ?? ()
 #9  0x0000002c in ?? ()
 #10 0x08079098 in ?? ()
 #11 0x00000019 in ?? ()
 #12 0xb7edd768 in vtable for nsObsoleteACStringThunk ()
    from /usr/lib/firefox/libxpcom_core.so
 #13 0x0973e800 in ?? ()
 #14 0x0000002d in ?? ()
 #15 0x00000005 in ?? ()
 #16 0x00000000 in ?? ()
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/tls/i686/cmov/libpthread.so.0
 nsProfileLock::FatalSignalHandler (signo=11)
 
 gtk_widget_event_internal (widget=0x0, event=0xbfa52fc8)
--- end of stack trace ---