LEAP/PEAP Issues Resolved!!
Here's what you do.
1) Download the 1.1.1 version of the driver (we have 1.1.0) here:
http://chrisnolan.org/IO80211Family.kext.zip
2) Back up your copy of the driver which is found in /System/Library/Extensions/IO80211Family.kext
3) Drag the new driver into the /System/Library/Extensions/ folder
4) Open up a terminal
5) Type:
sudo chown -R root:wheel /System/Library/Extensions/IO80211Family.kext/
6) Restart
7) Enjoy!
Macbook Pro, Mac OS X (10.4.5)