Microsoft has posted some answers to questions regarding the Content, Restriction, Annulment and Protection (or CRAP, some people euphemistically call it "Digital Rights Management") features built into Vista. I previously blogged about Peter Gutmann's explanation of the problems that it would cause Vista.
Microsoft has responded to these claims here.
The response does little to contradict Peter's findings, and merely tries to shed some positive light on things. They answer questions in the best style of Ari Fletcher; for example, when it comes to cost, they conveniently ignore the question and instead focus on the manufacturing benefits (!!!).
It is interesting to compare this with the presentation by ATI at Microsoft's Hardware conference in 2005 (WinHEC), Digital Media Content Protection which has a more honest look at the costs all throughout the stack.
The discussion at Slashdot browsed at +4 has the good stuff.