I've the same problem without gnash ...

2008/3/30, Shawn vega <svega85@gmail.com>:
i have this same problem but can't start firefox with gdb it's very easy to reproduce by going to http://www.reuters.com/news/video?videoId=78561&videoChannel=4 also i don't think it's a problem with gnash because i use adobe flash player and still have the same problem. below is the output of gdb when I try to run firefox with it.
shawn@shawn-hargdb firefox 2>&1 | tee gdb-firefox.txt
GNU gdb 6.7.1-debian
Copyright (C) 2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
"/usr/bin/firefox": not in executable format: File format not recognized
(gdb)


--
firefox-3.0 crashed with SIGSEGV in __kernel_vsyscall()
https://bugs.launchpad.net/bugs/184957
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Status in Source Package "firefox-3.0" in Ubuntu: Invalid

Bug description:
Binary package hint: firefox-3.0

Firefox crashed while composing an email in the Gmail rich interface.  At the time of crash, I was typing nothing.

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Mon Jan 21 19:47:49 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/lib/firefox-3.0-3.0b3pre/firefox-3.0
NonfreeKernelModules: nvidia
Package: firefox-3.0 3.0~b3~cvs20080101t1000+nobinonly-0ubuntu1
PackageArchitecture: i386
ProcCmdline: /usr/lib/firefox-3.0-3.0b3pre/firefox-3.0
ProcCwd: /home/corey
ProcEnviron:
  PATH=/home/corey/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  LANG=en_CA.UTF-8
  SHELL=/bin/bash
Signal: 11
SourcePackage: firefox-3.0
StacktraceTop:
  __kernel_vsyscall ()
  raise () from /lib/tls/i686/cmov/libpthread.so.0
  ?? () from /usr/lib/xulrunner-1.9b3pre/libxul.so
  ?? ()
  ?? ()
Title: firefox-3.0 crashed with SIGSEGV in __kernel_vsyscall()
Uname: Linux frankenputer 2.6.24-4-generic #1 SMP Mon Jan 14 17:30:39 UTC 2008 i686 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev sambashare scanner video