"There's an interesting interview on eWeek with Joanna Rutkowska, the stealth malware researcher who created 'Blue Pill' VM rootkit and planted an unsigned driver on Windows Vista, bypassing the new device driver signing policy. She roundly dismisses the quality of existing anti-virus/anti-rootkit products and makes the argument that the world is not ready for VM technology. From the article: 'Hardware virtualization, as recently introduced by Intel and AMD, is very powerful technology. It's my personal opinion that this technology has been introduced a little bit too early, before the major operating system vendors were able to redesign their systems so that they could make a conscious use of this technology, hopefully preventing its abuse.'"

http://www.eweek.com/article2/0,1895,2040760,00.asp