firefox crashed with signal 5 in _XError()

[Matthew Paul Thomas]

Binary package hint: firefox-3.5

Firefox was already running when apport tried to open a new copy. The new copy apparently crashed, leaving the existing one standing.

ProblemType: Crash
Architecture: i386
Date: Fri Aug 28 19:27:19 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/lib/firefox-3.5.2/firefox
Package: firefox-3.5 3.5.2+nobinonly-0ubuntu2
ProcCmdline: /usr/lib/firefox-3.5.2/firefox https://bugs.launchpad.net/ubuntu/+source/mouseemu/+filebug/qd8UuEMaxm3qZ7i6ZenBcHyvAg?field.title=package+mouseemu+0.16-0ubuntu4+failed+to+install%2Fupgrade%3A+subprocess+installed+post-installation+script+returned+error+exit+status+1
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-7.27-generic
Signal: 5
SourcePackage: firefox-3.5
StacktraceTop:
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 _XError () from /usr/lib/libX11.so.6
 _XReply () from /usr/lib/libX11.so.6
 XGetWindowProperty () from /usr/lib/libX11.so.6
 ?? () from /usr/lib/xulrunner-1.9.1.2/libxul.so
Title: firefox crashed with signal 5 in _XError()
Uname: Linux 2.6.31-7-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare