Comment 4 for bug 592630

For some crazy reason this stopped working and still affect to my upper panel, while working fine in bottom and side panels. Dragging cardapio applet with middle mouse button from upper panel to other panels, simply fixes problem.
I noticed it stops working when I try to grab and move window with alt key, but returns to normal after deleting and adding applet again to panel.

PS. Oh no! It stopped working also on my bottom panel after I've grabbed menu window with alt key and I've killed gnome-panels with xkill. It's the reason.
Please help :)