[mlinsey]

Depends on why users think it's intolerable, I suppose. The most common complaints I hear about Vista, even from casual users, are about performance, and I'm not sure what you could do about that.

[jgrahamc]

It would not surprise me if there's a whole bunch of useless services running; disabling them might help.

http://www.blackviper.com/WinVista/servicecfg.htm