There are many people in the Apple discussions that are having serious problems with iChat and Leopard. Many are getting an error like this: "There was a communication error during your chat. Did not receive a response from .... You can send details to Apple, etc." Others are reporting various "did not respond" errors.There are all kinds of solutions given involving ports, routers, modems, etc., and none of them seem to work consistently. I found that Internet Sharing in the Sharing System Preferences panel seems to be the culprit.By luck, I decided to try unchecking all options in the Sharing System Preferences panel. When I did that, my problems vanished. If that solves your problem, too, then go back and narrow down which one is blocking you. In my case, it was Internet Sharing that blocked things. As a test, I connected to a test server, appleu3test01@mac.com, without...
