Ephraim Schwartz details the man-in-the-middle attack that's possible in the current iteration of 802.1x authentication: because of the way in which 802.1x pieces elements of security together, a man-in-the-middle attack is possible in which a hacker poses as an access point to a client and a client to an access point. William Arbaugh and his graduate student Arunesh Mishra at the University of Maryland have made their report available in PDF form. (If you don't have PDF, use Adobe's online PDF-to-HTML converter.)
IOC: We Never Said It: the Olympics organizing committee apparently never said that they wouldn't consider 802.11 until 2008. Their contractor decided that for 2004 that the Olympics would continue to use existing, tested equipment, while continuing to evaluate 802.11 standards for future use. (This is what NASA does: they use old, slow, reliable technology for a lot longer than the rest of us.)