188.8.131.52 build 49: (Allows Legacy (eol), RSeries APs)
Not sure if you are experiencing what we were experiencing, but here it is:
Check for high CPU usage on the ZD 3000 w/7762. We saw high CPU, on the ZD, had to disable port protection between APs because they trying to speak to each other layer 2. Same deal though we could not reach the APs via SSH.
Management to ZD from remote was sluggish, (packet loss), was fine from VMWare on property.
Management to the APs SSH or other could not be established.
This specifically dealt with "Rogue APs & Neighbor APs" communications, and a flooding of packets to the network.