I'm on a 10.4.8 hackintosh, gma950 as said, everything work good, mean expose and 2d apps but when i try to load SecondLife it crashes suddenly all the time after loggin in, and worse, Alias Maya8.5 displays weird colors for the Shaders applied to the models when i move objects in the viewport and select/deselect...
any clue?

I tried 3 times to upload a 28kb png snapshot about my gma on sys profiler but upload failed.....

anyway, quartz extreme - supported;