Since 3.8 went Live, if I put the game full screen, after a couple of seconds the image freezes. i can still move the mouse and hear it going over the menu icons, but the screen is not updating, it's like a screenshot. If I put the game in windowed mode, everything is fine. This is only happening to me in 3.8 live, it didn't happen in 3.7 or in 3.8 ptu. What could it be?