I have a PIX 535 running on 6.3(5).
Recently , I find it getting rebooted frequently . The logs point out 'authentication error' as well.
Moreover, it kicks me off after 2 seconds when I login with my tacacs username/password.
What could be the reason for this erratic behaviour ?
All of a sudden , it is working fine now. there hasn't been any change in the network/rise in the traffic flow.