PROBLEM FIXED:
I upgraded the firmware to 2.95 from 2.91. I changed the WebServer Port to 82 from 81 (80 is used elsewhere on my system). I changed the Telnet port back to the default of 23 from 24. I made all 3 changes at the same time so i don't know which one really fixed it, but 2 days now and no disconnects.
- Paul KW7Y