Comment 3 for bug 879950

I'm not actually sure. The behaviour is very similar, but Pidgin is not listed in the startup Applications and this happens after oppening it at any given point, not necessairly after opening it on startup.

Niether have i tried that right button click solution or tested the eprsistence of the bug upon restart, I will as soon as the bug repeats itself and get back to you :D

Either way, I think it's the same Bug, just mine is a little more extended (happening also when not in the startup Applications).