Called-Station-Id = "0017.0f8c.25c1" However, the cisco itself shows something slightly different: Mac Address 0017.0f8c.25c0

Does your AP have two radios? If so, is this the MAC of the other radio?

Have others seen/noticed this before? ... If not, can anyone else look and see if they are having a similar issue?

We use Cisco 1232 AP's and I'm not seeing this problem. The Called-Station-ID is the MAC of the AP and the Calling-Station-ID is the MAC of my XP laptop that associated to the AP.