That is an interesting shocker. Because usually pwn2own, the Mac goes first (because beating it got you a nice MacBook Pro), followed by Windows (normally some nice Sony laptop), and then Linux (some generic Dell).
Linux has never been hacked in pwn2own.
I don't think Linux is one of the hacking categories at Pwn2Own. http://dvlabs.tippingpoint.com/Pwn2OwnContestRules.html
Debian dropped 386 support way back when 3.1 came out. Here are the reasons.
Your link is from 2003. Didn't 3.1 come out in 2011?