Comment 29 for bug 36189

I have been frustrated by this problem for a long time through several different Ubuntu releases... I run Ubuntu as a virtual machine and switching from fullscreen to windowed mode produces this behavior often...

The trouble is that this behavior can occur with a reboot or a simple update-manager update... I have coded up my own script to restore a default panel layout...

I do believe this needs to be addressed in Karmic ... preferably with little or no user intervention...

Feel free to contact me, I want this resolved - it can be a tremendous waste of time and is definitely detracts from Ubuntu's desktop user experience...