I've two machines running SOB but I'll be moving the XP of of it as soon as it finishes it's current proth test. It's a dog compared to the Athlon 64 running SOB. The AMD64 3000+ is running at 2.2 Ghz, stable at 47C and is pusing over 1 Meg in SOB on its own. The XP at best does 420K.