Holy moley, that's some fancy shell it's running if it takes up over 600mb
Naaah, I think I'll stick with my current plan and keep off Vista for as long as I can, preferably until I buy my next computer which is scheduled no sooner than in 1.5 years. I've always been a bit of a luddite as far as "if it works, don't fix it".
I guess a big factor will be how the whole DX10 thing goes. If it becomes a mandatory accessory sooner than I expect it, I guess we'll have no choice...