And what about Assault Cube and Cube? I see they are broken on your Nvidia6200 as well, do you need me to perfom other tests?
Unfortunatelly I'm not able to trace the regression. It is quite possible that Mesa was updated with some new features but no one added them to NV30-40 driver. The problem should not be wide spread however - Cube/Assault cube generate map static objects in very special way and this is causing the problem. Games generally don't render stuff the way Cube does.
Best regards, Krzysztof