Hi there Yesterday something really strange happened. All my iChat buddies disappeared (went offline at the same time) and since then they're all offline when i go onto iChat (via AIM). Now i tried to change the server port settings to 443 but that didn't do anything. Then I read the exact same issue here: http://discussions.apple.com/thread.jspa?messageID=6670971 I did all those steps and deleted the plist files to reset it and also force quit the agent and repeated the deletion again but it still doesn't work. What's going on? Neither changing server settings nor deletion of the old plist files did anything. What else can I do?