ATI Full Screen vs Pseudo

[bando]

I also have a 5870 card.
When i fire up the game, the game starts to the picture of the pilot and the maddox text (I deleted the ubi scene) and I can still see the bottom bar from windows (W7 - 64 bit).
I have to mouse click inside the picture area for the bottom bar to disappear and then I can tab esc twice to start the GUI. This does not look like full screen to me, although it is selected.

Maybe a 5870 problem.