I have just finished listening to the excellent SecurityNow podcast on the first WPA hack. Having heard some of the recommendations I went into my Airport Utility to try to set it to only use AES not TKIP encryption. Trouble is I didn’t get those options.
However what I did find is a setting which lets you change the WPA Group Key timeout. As the WPA hack requires a minimum of 12 minutes for the first intrusion, changing the WPA Group Key timeout to anything less than 12 minutes should prevent the hack from working.
The other bit I like about this is that it takes less than 30 seconds to do (not including resetting your Airport).