I suppose I'm happy with WinXP because I've got 3 copies now, and all legit too Free software from uni is always good Anyway, XP isn't as bad as Unne is making it out to be, it's the first Windows I've thought was actually worth being used as a desktop Windows OS (2000, although at least as stable as XP, is still a bit clunky for home and especially for entertainment use).

I guess Activation (in any recent MS product) is the biggest turn off for me though - I don't have any software installed which has required activating at some point.