Gnome 3 Notification area not showing

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http://forums.fedoraforum.org – Hi! I've been having quite a weird issue with the notification area in gnome 3.8. The usual behavior of the area is that it is shown a few seconds after the mouse pointer is put at the bottom of the screen. Under openSUSE, it worked like this every time. Under Fedora, however, the notification area only shows about < 10 % of the times i do this. Is this the intended behavior? (I mean is there some kind of functionality here i dont know about?) (HowTos)