Apple has released Snow Leopard Graphics Update which contains stability and performance fixes for graphics applications and games:
• Addresses frame rate issues occurring in Portal and Team Fortress 2 by Valve, on iMac (Late 2009 and Mid 2010), Mac mini (Early 2009 and Mid 2010), Mac Pro (Early 2009), MacBook (Early 2009 and Mid 2010) and MacBook Pro (15-inch, Mid 2010) or MacBook Pro (17-inch, Mid 2010) models.
• Resolves an issue that could cause Aperture 3, or StarCraft II by Blizzard, to unexpectedly quit or become unresponsive.
• Resolves an image corruption issue that may occur when disconnecting and reconnecting external displays while the system is running.
Products Affected:
MacBook (13-inch, Early 2009), MacBook Pro (17-inch, Mid 2010), MacBook Pro (13-inch, Mid 2010), MacBook Pro (15-inch, Mid 2010), iMac (21.5-inch, Late 2009), Mac Pro (Early 2009), Mac mini (Early 2009), Mac OS X 10.6.4, Mac mini (Mid 2010), iMac (21.5-inch, Mid 2010), iMac (27-inch, Mid 2010), MacBook (13-inch, Mid 2010), Portal, StarCraft II, Team Fortress 2
Supported Languages
Deutsch, English, Français, 日本語, Español, Italiano, Nederlands, Dansk, Norsk Bokmål, Polski, Português, Português Brasileiro, Pусский, Suomi, Svensk, 简体中文, 繁體中文, 한국어, Arabic, Bulgarian, Croatian, Czech, Estonian, Greek, Hebrew, Hungarian, Icelandic, Latvian, Lithuanian, Romanian, Slovak, Thai, Turkish, Ukrainian
Snow Leopard Graphics Update 1.0 is available via Software Update and also as a standalone installer.
More info and download link (65.65 MB)
here.