Two major issues forced ATI to work on a hotfix for their recently released Catalyst driver suite. The first resolved issue was Radeon 9100 series not working at all in OpenGL. The second fixes partly transparent and flickering objects in Neverwinter Nights. See ATI KB: NeverWinter Nights - Display corruption or flickering around in-game objects See ATI KB: OpenGL acceleration is unavailable when using a Radeon 9100 product with Catalyst 3.5 You can download a new non-WHQL driver set (multilanguage) that includes an updated OpenGL component.