I had a scrambled <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" /> screen once when I played AoW2. I had used the driver from the manufacturer of my GeForce 2 GTS card, the company called "Elsa" (doesn't exist anymore).
After upgrading to an NVidia driver, my screen was fine. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />