I get a very similar problem to this with my 3870. The only way I've found to fix it, is to change the AA settings. In games that have no in-game AA, if I force AA through CCC, I get the error you described, however if I use the in-game option (when available), I get no errors.
Not sure if this will be any help to you, but it's a bit more info I guess.
Not sure if this will be any help to you, but it's a bit more info I guess.