I've never been a fan of upgrades; patches or system upgrades. They've always resulted in very bad experiences for me. Unless you start with a fresh install then upgrade that, there almost always seems to be problems in the end.
I may wait and hope my University releases a copy of Vista Business SP1 for us to download and just reload my new machine that way rather than trying another upgrade. I mean as long as it took to fail last time, loading a whole new OS shouldn't be that much worse
