Yeah, this whole thing about so many different versions I think helped to make the Vista push a failure as well. Just make them all Pro versions when they make an OS and be done with it. I know there are reasons for it but I think those reasons back fired on them.

Have you manually set one and watched it NOT work ? I know that the SP3 will not install automatically on it's own as I've set the WU to do all updates automatically and it is now sitting there waiting for me to install it for my workstations and won't do it for my users (who are not Admins), but it does do all the other updates on it's own.