Microsoft would rather you forget about Vista and move on to Windows 7. But I'm not ready for that just yet.

One reason for that is that Microsoft would really just as soon have you forget about Vista and think about Windows 7 instead. The other is that there's really not that much new in SP2.

What Vista SP2 really is, when you get right down to it, is all the many fixes and patches that have been made to Vista since SP2. If you've been keeping your Vista system up to date, you won't need to update it.

More: http://pcworld.com/article/166515/