I found that designer-qt4 causes the same problem consistently when starting up, so I was able to get a backtrace of gnome-panel. I'd like to re-open this report.
** Changed in: gnome-panel (Ubuntu) Status: Invalid => New -- gnome-panel hangs w/ 100%CPU when running Gimp, Inkscape https://bugs.launchpad.net/bugs/331704 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs