I have this problem as well when using the workspace switcher, usually when scrolling through with the mouse wheel. It has happened first when I checked the "Workspaces on a Cube" button in Desktop effects. It has persisted even though I have disabled this option. What happens is like you say above -- both panels go out. Restarting X fixes it, of course. Sometimes only the bottom panel goes out, sometimes both, sometimes the desktop icons go too. I have noticed the number of workspaces go from my set value of 6 to 1 additionally, I am assuming it is related.
** Attachment added: "Look! No Panels." http://librarian.launchpad.net/7389650/Screenshot.png -- Desktop effect (switch between workspaces..) makes my System crash https://bugs.launchpad.net/bugs/109118 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug contact for gnome-panel in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs