This Wednesday just past and next, my roommate is in charge of a pretty big Mac/NT lab overnight. Last night I set up 7 G3s to run RC5 overnight (well... six hours)... don't know how many blocks they did. Next week I'll do the same, but probably add more. Its not much, maybe 200-300 blocks, but I'm also asking all my friends to install it. Not many have G4s though. It sucks being on a PC campus =(.