I am running a WLC 4402 and have WPA/TKIP configured on my one SSID. After a while it stops processing client requests that are coming in using PEAP. It works for a couple of days using PEAP and then starts rejecting it. I can use LEAP at all times while this is happening. I would think it is a AAA server issue except for the fact that PEAP usually works on a reboot or after a rebuild before it goes bad. Any ideas as to what could be happening?