Even the Microsoft people know it's bad.....

Software Tool Strips Windows Vista To Bare Bones

With Vista bearing a footprint 10 times larger than XP's, even Microsoft officials are expressing concerns about Windows' growing waistline. Speaking last year at the University of Illinois, Microsoft distinguished engineer Eric Traut said the operating system had become bloated.

"A lot of people think of Windows as this large, bloated operating system. That may be a fair characterization," said Traut.