At one point the nvidia drivers *didn't*, because one of the files (akmod? Can't remember specifically) didn't support the kernel debug code... I think -- I apologize, I'm only half-remembering this conversation, but the gist was one of the components of the proprietary nvidia drivers wasn't compatible with the default kernel, and the only way to get it to work was to compile your own kernel without... something. I think it was the debug code.
Anyway, I was just wondering if that had changed by now. I heard a rumor that the F17 kernel no longer has debug code in it, so I thought maybe there was a chance.