New aluminum iMac 24" - texture problems

[Buckie]

Buckie,

Sorry about not getting back with you.

This is a known issue and it also affects Windows and Linux w/ the ATI HD cards. We are working on resolving the issue.

Have you tried turning off Post Effects to see if that resolves some of the issues?
Also, can you provide screen shots?

Ah, I see. Here are the screenshots, I'll try turning off the post effects now...
I'm holding a flashlight that is on and these yellow dots are from the flashlight. There is supposed to be a security door here, but I don't see it (just feel it).
PS. No, the post effects switch made no difference.