The ASA 5520 is configured for Transparent mode. Whenever I telnet to the ASA management IP address via telnetting from another device such as a 3560 or 2960 switch and issue a "show run" command, I receive a partial output of the ASA config, then the session hangs. Besides losing connectivity to the ASA, all IP connectivity to the IP address of the switch that I telnetted from is lost. It takes approximately 5 minutes before IP connectivity to the switch is restored.
If I downgrade to version 7.22, I do not have this problem. Also, version 8.02 permits telnet connectivity to the ASA from the outside, unlike version 7.22.