Ubuntu
firefox-3.5 package

firefox crashes unexpectedly and close

Bug #472085 reported by Mau on 2009-11-03

This bug affects 5 people

Affects		Status	Importance	Assigned to	Milestone
	firefox-3.5 (Ubuntu)	New	Undecided	Unassigned

Bug Description

Binary package hint: firefox-3.5

Description: Ubuntu 9.10
Release: 9.10
Synaptic 0.62.5
When I'm using firefox they close unsexpectedly

ProblemType: Bug
Architecture: i386
Date: Mon Nov 2 20:50:50 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: firefox-3.5 3.5.4+nobinonly-0ubuntu0.9.10.1
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: firefox-3.5
Uname: Linux 2.6.31-14-generic i686

Tags:

Revision history for this message

Mau (avmauricio-gmail) wrote on 2009-11-03:

Dependencies.txt Edit (3.4 KiB, text/plain; charset="utf-8")
ExtensionSummary.txt Edit (1.1 KiB, text/plain; charset="utf-8")
XsessionErrors.txt Edit (815.3 KiB, text/plain; charset="utf-8")
profile_default_pluginreg.dat.txt Edit (5.9 KiB, text/plain; charset="utf-8")
profiles.ini.txt Edit (94 bytes, text/plain; charset="utf-8")

Revision history for this message

Matt Burkhardt (matthewboh) wrote on 2010-03-16:

Just go to http://www.cybercoders.com - it will crash and close everytime

Revision history for this message

Matt Burkhardt (matthewboh) wrote on 2010-03-16:

Download full text (13.3 KiB)

I decided to run it from the command line and copy the additional debug messages. Looks like it might be a problem with Moonlight

firefox

(firefox:5677): GLib-WARNING **: g_set_prgname() called multiple times
Attempting to load libmoonloaderxpi
Moonlight: Installing signal handlers for crash reporting.
Moonlight: Enabling MONO_DEBUG=keep-delegates and MOONLIGHT_ENABLE_CONSOLE=1

** (firefox:5677): WARNING **: Thread (nil) may have been prematurely finalized

=============================================================
Got a SIGSEGV while executing native code.
We'll first ask gdb for a stack trace, then try our own
stack walking method (usually not as good as gdb, but it
can do managed and native stack traces together)
=============================================================

Debug info from gdb:

Cannot access memory at address 0x8389c089
[Thread debugging using libthread_db enabled]
[New Thread 0x97c8b70 (LWP 5727)]
[New Thread 0xac2ffb70 (LWP 5726)]
[New Thread 0xab5ffb70 (LWP 5725)]
[New Thread 0xad3feb70 (LWP 5705)]
[New Thread 0xae8feb70 (LWP 5704)]
[New Thread 0xb40feb70 (LWP 5703)]
[New Thread 0xadbffb70 (LWP 5698)]
[New Thread 0xaf0ffb70 (LWP 5693)]
[New Thread 0xafaffb70 (LWP 5692)]
[New Thread 0xb55ffb70 (LWP 5691)]
[New Thread 0xb38fdb70 (LWP 5690)]
[New Thread 0xb48ffb70 (LWP 5689)]
[New Thread 0xb60fdb70 (LWP 5682)]
[New Thread 0xb68feb70 (LWP 5681)]
[New Thread 0xb70ffb70 (LWP 5680)]
0x00f9a422 in __kernel_vsyscall ()
  16 Thread 0xb70ffb70 (LWP 5680) 0x00f9a422 in __kernel_vsyscall ()
  15 Thread 0xb68feb70 (LWP 5681) 0x00f9a422 in __kernel_vsyscall ()
  14 Thread 0xb60fdb70 (LWP 5682) 0x00f9a422 in __kernel_vsyscall ()
  13 Thread 0xb48ffb70 (LWP 5689) 0x00f9a422 in __kernel_vsyscall ()
  12 Thread 0xb38fdb70 (LWP 5690) 0x00f9a422 in __kernel_vsyscall ()
  11 Thread 0xb55ffb70 (LWP 5691) 0x00f9a422 in __kernel_vsyscall ()
  10 Thread 0xafaffb70 (LWP 5692) 0x00f9a422 in __kernel_vsyscall ()
  9 Thread 0xaf0ffb70 (LWP 5693) 0x00f9a422 in __kernel_vsyscall ()
  8 Thread 0xadbffb70 (LWP 5698) 0x00f9a422 in __kernel_vsyscall ()
  7 Thread 0xb40feb70 (LWP 5703) 0x00f9a422 in __kernel_vsyscall ()
  6 Thread 0xae8feb70 (LWP 5704) 0x00f9a422 in __kernel_vsyscall ()
  5 Thread 0xad3feb70 (LWP 5705) 0x00f9a422 in __kernel_vsyscall ()
  4 Thread 0xab5ffb70 (LWP 5725) 0x00f9a422 in __kernel_vsyscall ()
  3 Thread 0xac2ffb70 (LWP 5726) 0x00f9a422 in __kernel_vsyscall ()
  2 Thread 0x97c8b70 (LWP 5727) 0x00f9a422 in __kernel_vsyscall ()
* 1 Thread 0xb77f26e0 (LWP 5677) 0x00f9a422 in __kernel_vsyscall ()

Thread 16 (Thread 0xb70ffb70 (LWP 5680)):
#0 0x00f9a422 in __kernel_vsyscall ()
#1 0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/tls/i686/cmov/libpthread.so.0
#2 0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3 0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4 0x0115e22c in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5 0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#6 0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7 0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 15 (Thread 0xb68feb70...

I decided to run it from the command line and copy the additional debug messages.  Looks like it might be a problem with Moonlight

firefox

(firefox:5677): GLib-WARNING **: g_set_prgname() called multiple times
Attempting to load libmoonloaderxpi 
Moonlight: Installing signal handlers for crash reporting.
Moonlight: Enabling MONO_DEBUG=keep-delegates and MOONLIGHT_ENABLE_CONSOLE=1

** (firefox:5677): WARNING **: Thread (nil) may have been prematurely finalized

=============================================================
Got a SIGSEGV while executing native code.                        
 We'll first ask gdb for a stack trace, then try our own     
 stack walking method (usually not as good as gdb, but it    
 can do managed and native stack traces together)            
=============================================================

Debug info from gdb:

Cannot access memory at address 0x8389c089
[Thread debugging using libthread_db enabled]
[New Thread 0x97c8b70 (LWP 5727)]
[New Thread 0xac2ffb70 (LWP 5726)]
[New Thread 0xab5ffb70 (LWP 5725)]
[New Thread 0xad3feb70 (LWP 5705)]
[New Thread 0xae8feb70 (LWP 5704)]
[New Thread 0xb40feb70 (LWP 5703)]
[New Thread 0xadbffb70 (LWP 5698)]
[New Thread 0xaf0ffb70 (LWP 5693)]
[New Thread 0xafaffb70 (LWP 5692)]
[New Thread 0xb55ffb70 (LWP 5691)]
[New Thread 0xb38fdb70 (LWP 5690)]
[New Thread 0xb48ffb70 (LWP 5689)]
[New Thread 0xb60fdb70 (LWP 5682)]
[New Thread 0xb68feb70 (LWP 5681)]
[New Thread 0xb70ffb70 (LWP 5680)]
0x00f9a422 in __kernel_vsyscall ()
  16 Thread 0xb70ffb70 (LWP 5680)  0x00f9a422 in __kernel_vsyscall ()
  15 Thread 0xb68feb70 (LWP 5681)  0x00f9a422 in __kernel_vsyscall ()
  14 Thread 0xb60fdb70 (LWP 5682)  0x00f9a422 in __kernel_vsyscall ()
  13 Thread 0xb48ffb70 (LWP 5689)  0x00f9a422 in __kernel_vsyscall ()
  12 Thread 0xb38fdb70 (LWP 5690)  0x00f9a422 in __kernel_vsyscall ()
  11 Thread 0xb55ffb70 (LWP 5691)  0x00f9a422 in __kernel_vsyscall ()
  10 Thread 0xafaffb70 (LWP 5692)  0x00f9a422 in __kernel_vsyscall ()
  9 Thread 0xaf0ffb70 (LWP 5693)  0x00f9a422 in __kernel_vsyscall ()
  8 Thread 0xadbffb70 (LWP 5698)  0x00f9a422 in __kernel_vsyscall ()
  7 Thread 0xb40feb70 (LWP 5703)  0x00f9a422 in __kernel_vsyscall ()
  6 Thread 0xae8feb70 (LWP 5704)  0x00f9a422 in __kernel_vsyscall ()
  5 Thread 0xad3feb70 (LWP 5705)  0x00f9a422 in __kernel_vsyscall ()
  4 Thread 0xab5ffb70 (LWP 5725)  0x00f9a422 in __kernel_vsyscall ()
  3 Thread 0xac2ffb70 (LWP 5726)  0x00f9a422 in __kernel_vsyscall ()
  2 Thread 0x97c8b70 (LWP 5727)  0x00f9a422 in __kernel_vsyscall ()
* 1 Thread 0xb77f26e0 (LWP 5677)  0x00f9a422 in __kernel_vsyscall ()

Thread 16 (Thread 0xb70ffb70 (LWP 5680)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x0115e22c in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#6  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 15 (Thread 0xb68feb70 (LWP 5681)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x0041dc96 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x00cd05fc in ?? () from /usr/lib/libnspr4.so
#3  0x011bf589 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#4  0x011bfa8a in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x011bfc9d in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x01970fba in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#7  0x0194175f in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#8  0x011bf788 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#9  0x01971015 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#10 0x0194175f in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#11 0x01971717 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#12 0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#13 0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#14 0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 14 (Thread 0xb60fdb70 (LWP 5682)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x0197474a in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x01971015 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x0194175f in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#7  0x01971717 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#8  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#9  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 13 (Thread 0xb48ffb70 (LWP 5689)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00832e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00cce8cb in PR_WaitCondVar () from /usr/lib/libnspr4.so
#3  0x017abff6 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#4  0x017ab906 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#6  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 12 (Thread 0xb38fdb70 (LWP 5690)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00832e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00cce8cb in PR_WaitCondVar () from /usr/lib/libnspr4.so
#3  0x017ad014 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#4  0x017ab906 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#6  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 11 (Thread 0xb55ffb70 (LWP 5691)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00832e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00cce8cb in PR_WaitCondVar () from /usr/lib/libnspr4.so
#3  0x00cce937 in PR_Wait () from /usr/lib/libnspr4.so
#4  0x019701e3 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x01970fed in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x0194175f in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#7  0x01971717 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#8  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#9  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 10 (Thread 0xafaffb70 (LWP 5692)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00832e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00cce8cb in PR_WaitCondVar () from /usr/lib/libnspr4.so
#3  0x00cce937 in PR_Wait () from /usr/lib/libnspr4.so
#4  0x019701e3 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x01970fed in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x0194175f in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#7  0x01971717 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#8  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#9  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 9 (Thread 0xaf0ffb70 (LWP 5693)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x011c87e9 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x011c91f4 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#7  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 8 (Thread 0xadbffb70 (LWP 5698)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x00cce937 in PR_Wait () from /usr/lib/libnspr4.so
#5  0x01972cac in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x01971015 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#7  0x0194175f in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#8  0x01971717 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#9  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#10 0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 7 (Thread 0xb40feb70 (LWP 5703)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x011c87e9 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x011c91f4 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#7  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 6 (Thread 0xae8feb70 (LWP 5704)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x011c87e9 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x011c91f4 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#7  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 5 (Thread 0xad3feb70 (LWP 5705)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00833142 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ccda4e in ?? () from /usr/lib/libnspr4.so
#3  0x00cce834 in PR_WaitCondVar () from /usr/lib/libnspr4.so
#4  0x011c87e9 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#5  0x011c91f4 in ?? () from /usr/lib/xulrunner-1.9.1.8/libxul.so
#6  0x00cd4c07 in ?? () from /usr/lib/libnspr4.so
#7  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 4 (Thread 0xab5ffb70 (LWP 5725)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00832e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb169879f in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#3  0xb17cb7ff in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#4  0xb1698c5d in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#5  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread 0xac2ffb70 (LWP 5726)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00832e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb169879f in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#3  0xb17cb7ff in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#4  0xb1698c5d in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#5  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0x97c8b70 (LWP 5727)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00836466 in nanosleep () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x02777388 in collection_thread (unused=0x0) at collection.c:34
#3  0x0082e80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#4  0x0042b8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77f26e0 (LWP 5677)):
#0  0x00f9a422 in __kernel_vsyscall ()
#1  0x00835c8b in read () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x076ede1d in print_gdb_trace () at debug.cpp:709
#3  0x076ef463 in moonlight_handle_native_sigsegv (signal=11) at debug.cpp:762
#4  0x02698db5 in mono_chain_signal (_dummy=11, info=0xb7203c8c, 
    context=0xb7203d0c) at mini-posix.c:133
#5  0x025d6093 in mono_sigsegv_signal_handler (_dummy=11, info=0xb7203c8c, 
    context=0xb7203d0c) at mini.c:4833
#6  <signal handler called>
#7  0x7fffffff in ?? ()
#8  0x000090a8 in ?? ()

Debug info from libmoon:

** (firefox:5677): WARNING **: Thread (nil) may have been prematurely finalized
	/home/mlb/.mozilla/firefox/7fwamyem.default/extensions/moonlight@novell.com/plugins/moonlight/libmoonxpi.so [0x76ef38a] print_stack_trace /home/rupert/src/moon-2-99-0-3/moon/src/debug.cpp:129
	/home/mlb/.mozilla/firefox/7fwamyem.default/extensions/moonlight@novell.com/plugins/moonlight/libmoonxpi.so [0x76ef492] moonlight_handle_native_sigsegv /home/rupert/src/moon-2-99-0-3/moon/src/debug.cpp:767
	/home/mlb/.mozilla/firefox/7fwamyem.default/extensions/moonlight@novell.com/plugins/moonlight/libmono.so [0x2698db5] mono_chain_signal /home/rupert/src/moon-2-99-0-3/mono/mono/mini/mini-posix.c:142
	/home/mlb/.mozilla/firefox/7fwamyem.default/extensions/moonlight@novell.com/plugins/moonlight/libmono.so [0x25d6093] mono_sigsegv_signal_handler /home/rupert/src/moon-2-99-0-3/mono/mono/mini/mini.c:4833
	[0xf9a410]
mlb@mlb-dell:~$

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Ubuntufirefox-3.5 package

firefox crashes unexpectedly and close

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Ubuntu
firefox-3.5 package