We have a VPN Concentrator 3000 which was working fine. Suddenly for no apparent reason the admin password reset itself to the default. I can change the password on the Concentrator to anything and it will work. I can write the new config to flash it will say that it's done Ok, but it reverts back to the default password after a reboot. If I change any other settings and write them to flash it works. This only affects the admin password. If I change multiple settings, save them then reboot. It saves everything except the admin password. Everything else is working fine and the users are unaffected. Obviously having the default password is a security risk. Anything I try seems to have no effect. Any ideas as to what's going on, or how I can permanently change the admin password?