Thanks for your bug report. The crash looks like a memory corruption. Could you try to get a valgrind log for it? (you can follow the instructions from https://wiki.ubuntu.com/Valgrind for that)
When did you do your previous update? For how long was the panel running? The GTK package has been updated to fix a crasher when packages are upgraded, it would be interesting to know if you panel has been restarted with the new version installed ** Changed in: gnome-panel (Ubuntu) Importance: Undecided => Medium Assignee: (unassigned) => Ubuntu Desktop Bugs Status: Unconfirmed => Needs Info -- [apport] gnome-panel crashed with SIGSEGV in malloc() https://launchpad.net/bugs/89748 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs