From what I have read, Vista is a turkey. Way too many bugs and, in some respects, isn't as efficient as older software.
Dell Computer Co recently stopped furnishing Vista in new computers and went back to XP.
Just for kicks and giggles, do a Google search on Vista and see what you find.
Here is an article from a few weeks back:
http://www.theinquirer.net/default.aspx?article=39087