Thanks for your bug. Upstream http://bugzilla.gnome.org/show_bug.cgi?id=346523 has a similar backtrace. Could you install gnome-panel-dbg and libwnck18-dbgsym (apt source for getting the dbgsym package: "deb http://people.ubuntu.com/~pitti/ddebs edgy main universe") and get a backtrace with them?
Do you use a xinerama setup? ** Changed in: gnome-panel (Ubuntu) Importance: Undecided => Medium Assignee: (unassigned) => Ubuntu Desktop Bugs Status: Unconfirmed => Needs Info ** Bug watch added: GNOME Bug Tracker #346523 http://bugzilla.gnome.org/show_bug.cgi?id=346523 ** Also affects: gnome-panel (upstream) via http://bugzilla.gnome.org/show_bug.cgi?id=346523 Importance: Unknown Status: Unknown -- Crash when right clicking on the window-list applet https://launchpad.net/bugs/68881 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs