I am using RC2 and I think it's a bit buggier than RC1. But all in all, it's a great O.S. I don't mind the System Activation. I don't mind having to call Microsoft to reactivate XP, because the machine I will be installing XP Gold on will be my dream machine. And I won't plan on changing anything for a long long time. But even if I had to call MS, I wouldn't mind. I spend 45 minutes on hold for other things that I don't use as much as my P.C. So if the call takes more than 15 minutes, then we have some problems!!