[apport] gnome-panel crashed with SIGSEGV in gdk_x11_window_set_user_time()

Binary package hint: gnome-panel

just booted up and it crashed

ProblemType: Crash
Architecture: i386
Date: Sun Mar 11 14:15:31 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gnome-panel
Package: gnome-panel 2.17.92-0ubuntu4
PackageArchitecture: i386
ProcCmdline: gnome-panel --sm-client-id default1
ProcCwd: /home/hardaway
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gnome-panel
StacktraceTop:
 gdk_x11_window_set_user_time ()
 ?? () from /usr/lib/libgdk-x11-2.0.so.0
 ?? ()
 ?? ()
 ?? ()
Uname: Linux hardaway-laptop 2.6.20-9-generic #2 SMP Mon Feb 26 03:01:44 UTC 2007 i686 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video