firefox crashed with signal 5 in _XError()

[Universe777]

Binary package hint: firefox-3.5

Tried out the megaphone applet while browsing the net, both crashed ...
Release: 9.10
firefox-3.5:
  Installiert: 3.5.2+nobinonly-0ubuntu2
  Kandidat: 3.5.2+nobinonly-0ubuntu2
  Versions-Tabelle:
 *** 3.5.2+nobinonly-0ubuntu2 0
        500 http://de.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
Architecture: i386
Date: Mon Aug 17 15:11:28 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/empathy/+filebug/puH1fOh7kyMrogqp3hYw6ME4L3F?field.title=megaphone-applet+crashed+with+SIGSEGV+in+g_str_hash%28%29
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-6.25-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 2.6.31-6-generic i686
UserGroups: adm admin cdrom dialout plugdev