I backed up my version 3.1 install, then upgraded to version 5. When I attempted to make incoming calls, all I got was a fast-busy signal (inboudn line maps to a digital receptionist, so the phone being unregistered was not a problem). I then tried a clean install, and had the same problem. Nothing even showed up in the logs. I reverted back to 3.1, but I'd like to be able to use v5. Any thoughts?