I get a thin horizontal black bar on my screen after playing UT2004, NOLF2, and maybe others too. The black bar isn't visible normally, but it can be seen via Exposé - when moving all windows away to see the desktop - travelling from the bottom of the screen to the top. You can see the bar sitting near the top of the screen when Exposé is in effect.
When I go dual-monitor afterwards, a vertical black bar tracks the mouse, forcing a reboot to remove.
Does anyone else see this? Is there any way to prevent it, or kill the bar once its happened?
PBG4 1.25 Radeon 9600.