So a b5c started acting up last Wednesday. Starting giving an system unresponsive system error then would reboot every 10minutes. The unit is several year old. After unit boots up. Everything works, as soon as the unit makes a wireless link connection you lose access to gui until it finds itself to be unresponsive then reboots, you usually have about 10-15 seconds to log in and make changes before the link comes up and and it repeats itself. I managed to update its firmware to current latest last week. Issue still occurred. I purchased a brand new unit, installed last night got updated to latest firmware got link working. About an hour after link had been working brand new unit is doing the same thing.
Anything I can do to resolve this? Makes me think old unit is still good.