If “buyer’s remorse” describes regret and self-doubt after a costly purchase, then “upgrader’s remorse” seems to sum up the feelings some people have after switching to Windows Vista.
And why shouldn’t they feel that way? Windows XP is noticeably faster than Vista on the same hardware, and it gets by with much less RAM and hard drive space. Microsoft’s Service Pack 3 makes XP even faster, but the same cannot be said of Vista’s Service Pack 1. And Windows Explorer crashes far more often in Vista (preceded, of course, by the notorious Green Ribbon of Death). Why, XP’s staggeringly superior hardware support alone makes a convincing case for dumping Vista in favor of its predecessor.