@TimF Can you pls. check if some phones have unexplainable roaming decisions and/or No Network messages?
We sill have lots of "No Network" on our WL3's even when they are in the charger, caused by missing beacon frames from AP3915i.
I don't get it too, why this nice feature should be left to "service personnel" only? If there would be no other chance to get (SSH) access to the APs, then it would be ok for "security" reasons.
But due the fact, everybody knows the SSH credentials,...