Okay my mistake was keeping my second graphics card plugged in, so I just pulled its cables out and now im perfectly working with 10.6.6 updated + audio.

Problem now: audio sounds pretty lame and low quality compared to my evga audio drivers I had on windows xp/7 =/ any way I can get better sound? I need to use this rig for mixing and music production so its hella important that I get good sound...

Anyone?

PS. I did the update to 10.6.6 should I still download seperate drivers from EVGA for my GTX 285 and chipset etc?