Apple have just released a new graphics update for Snow Leopard that contains stability and performance fixes for games and graphics applications on certain Apple systems.
One main problem specifically addresses by the update is the frame rate problems identified by game publisher Valve Software in its games Portal and Team Fortress 2 on certain Mac systems.
The update also resolves an issue that could make Aperture 3 or StarCraft II to unexpectedly quit or become unresponsive. Together with an image corruption issue that may occur when disconnecting and reconnecting external displays while the system is running.
Affect systems and products are:
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