The news from CanSecWest that FireFox, Internet Explorer, and Safari all fell to penetrations on the first day put a feather in Google's cap as Chrome remained standing. However, there was one startling difference from this years contest compared to last years's Pwn 2 Own. During the 2008 conference the laptop running Ubuntu Linux went unclaimed : http://dvlabs.tippingpoint.com/blog/2008/03/28/pwn-to-own-final-day-and-wrap-up
This year, Linux wasn't invited back, with the only appearance consisting of Google's Android Mobile Phone stack: http://cansecwest.com/post/2009-03-18-01:00:00.PWN2OWN_Final_Rules
If I in were the shoes of Microsoft or Apple, I would probably be sweating. Especially considering that one of the panel's consists of hardening Linux: http://cansecwest.com/dojolinuxhardening.html The obvious read between the lines, and one that Dell would be smart to pick up as a promotion, is that Linux is so secure, the best Hackers in the world didn't think they could take a Linux system down in 3 days.