Vista has bugs yes but nothing like XP. Mr.Coffee is way off on that one. Vista has had at MOST 5 Important updates in 6 months. It has had about 20 Recommended updates. A VERY BIG difference than XP that had 50 Important updates and 200 Recommended.
Vista does have some bugs but they are few that affect most everyday users. The major one is the System Restore. But Vista comes with its own backup feature so you can use that instead of Restore. So there is your fix. Other than that the bugs affect more business, programmers, and developers than any of us using it as a Home OS.