I've got an SSID on my 1131 AP's (autonomous) configured with both WPA and CCKM for key management. All other clients have no issues. One laptop model (HP 2710) has intermitten issues failing CCKM authentication. The error in the log on the AP only says that the client has failed CCKM authentication.
I'm in a layer 3 mobility environment with users frequently roaming, so I'd like to make sure that removing CCKM will not impact their ability to roam freely. I have TKIP enabled for encryption and all the other clients have no problems at all using CCKM.
Darn Intel cards!