Snow Leopard Graphics Update
Apple has released the Snow Leopard Graphics Update to address graphics problems in games and graphics applications. In particular, the update addresses frame rate performance problems in Portal and Team Fortress 2 on certain Macs, and fixes a bug that could cause Aperture 3 and StarCraft II to crash or freeze. Macworld is now reporting that the update can significantly improve graphics performance in other games as well. It’s available via Software Update or the Apple Support Downloads page. (Free, 65.65 MB)