I'd rather back up to Windows 2000 and a secure firewall.

I understand that Vista has significant processor and video requirements, so I really can't see myself quickly adopting a new OS technology that might actually reduce what capacity is left for crunching.

Like others, I'll wait for several of the many traditonal MS service packs to come out first. What a kick; Microsoft has made incomplete Operating Systems and their following service packs a tradition - and we the public will pay a premium for it.