I recently bought a Macbook with Leopard on it, and every once in a while, iChat seems to give me trouble. At one point, I was getting error messages that the servrhost was timed out, or something along those lines. Anyway, I read some similar threads about that, and ended up changing my port. That problem appears to have been fixed, but now I'm getting signed off and sometimes don't realize it. In chats, I'll stop getting messages from others, and then my buddy list will 'reset'. Sometimes after this happens and I don't reset iChat, I don't get messages from other people even though I'm still shown as online and so are they. Tonight, I had difficulty receiving messages even after I reset iChat. I'm running off a router, and my wi-fi signal is 100%. I don't understand what this problem could be. Any ideas?