Top menu problem, no background in menu (Kebir Blue)

The top menu has no background on my Vista laptop. Before and after logging in.
(The menu with General War My Empire etc). After clicking on one of the options, the text does appear but without background. So I can see the text of the page through the background.

Does anybody know a sollution?

Sorry dude, I have no idea. I know im not being in the least helpful, but perhaps when I tell you that I mainly use a vista running laptop to play the game with, and that I don't have the same problem - you can rule that bit out!!!