On my work's network, most people are using Windows and IM each other via an internal SIP server. I used to be able to connect using Adium on Tiger. I don't know if something changed on the SIP server, in the Adium app, or in Leopard, but I do know I can no longer connect... The setup instrux are for MSN Messenger (Windows): use email address as username, and connect to xyz.local server. The rest is done automatically. For Adium, I found out that the SIP port is 5060. I can "telnet xyz.local 5060" to confirm the connection is working. The rest of the SIP setup in Adium seems straightforward: input username, server address, port # and password. I left other settings as default. Adium just always says "Connecting" but never connects. Has any one dealt with / solved this one?? Please advise.