Confirming this on Lucid. I use Alt-F2 and 'killall gnome-panel' to bring the panel back.
** Changed in: maximus (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/648826 Title: gnome-panel sometimes disappears when switching between windows -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs