I'm going to buy 1 copy of vista to get the new features, then I will keep xp (especially sp1 and before) on the rest of my computers. MS get on my nerves, with all of their tracking tricks that they put on your computer. it won't even be your computer, it will be MS. they will be checking to see if they will allow you to do something.
then a hacker or terrorist will break the code and use the technology to hijack everybody's computer