Yes i think its a big Problem. In a inofficial german ATI-Forum are a few user with Problems in Games (CS,QIII,OFP) so i think ATI should fix it fast as possible. I think you should test the Omegadriver form www.omegacorner.com they are often better than original ATI-driver. I tested the Omegadriver but they didnt solve the problem on my PC. But test the driver and maybe.....
Sorry for the bad English.
Edit:
I found a "Solution" i made a copy oft the O.pbo and deleted the O.pbo OFP works but without Textures etc...