If so, do you get wierd missing/corrupt polygons when 4xAA & 8xAF is enabled?
I have the drivers that were released last week but the solution here is to install older drivers than I have now.
http://www.ati.com/support/infobase/4392.html
It doesn't detract too much from the game because I'm too busy driving to noticed any jagged edges so I can disable AA but still...