I installed the newest ATI Radeon drivers, the 6.3, today. Everything was fine until I used the basic invasions tactic. Suddenly the screen went black with flashes of color appearing. However when I pressed alt-tab it took me to the invasions screen but frozen. The mouse and the jumbling ivasions odds were both frozen. When I alt-tabbed back to the black screen the mouse would move. If you managed to hit the button to start the invasion on the black screen it would work and when the invasions was done it would take you back to the planet screen and everything would work again. I tried a second regular invasions anfter restarting the program and it happened again. However when I used any other invasions tactics the invasions screen worked fine.