I noticed that problem. Actually it happened to me every day at 00:00. When I entered killall gnome-panel in the console, it restarted and worked fine. So I think the problem is the mindight time.
I noticed that problem. Actually it happened to me every day at 00:00. When I entered killall gnome-panel in the console, it restarted and worked fine. So I think the problem is the mindight time.