Windows 7 IDE problem

Hi all,

I see since today at my windows 7 installation all Arduino IDE versions have a black menu (0.23/1.01/1.5)....
(see pic)
Other programs dont have. Maybe it is a Java problem?
Anyone have a idea, what it is???

greetings
Michael

so I answer myself:

go to control panel> trouble-shooting> Aero Desktop effects
Let windows search for problems.
Thats it.