There is a theory that so far, every other main stream Windows operating system has been decent and the ones in between have not.

Windows 98 was better than 95 of course. Then you had WindowsME, which most people still agree was a large lump of digital crap. Next comes XP, which is based on 2000, and has been Mircosoft's best and most stable system yet.

Based on this every other system theory, Vista may just be a turkey.

Only time will tell.