Graphics errors - first scene

[Emon]

I too am having this issue. Vista, X1650XT, Catalyst 7.5. Setting the shader detail to low or very low seems to fix it. I'm still having the menu freeze problem, though.

ATI really needs to clean up their act here. I'm installing Ubuntu with Wubi and will try Penumbra there. It would be really sad if the Linux drivers worked better than the Vista ones.