My video chat will work with some people who have ichat but then it doesnt work with others. To get the chat to work, we tried resettign out computers and logging off and on to ichat, and nothing seems to work. Usually when ichat doesnt work between me and someone, we just sign off and back on and it works. But now my friend who has a brand new macbookpro is unable to chat with me, whereas at the sime time I am able to with someone else. What can cause this to happen, and how can it be fixed? Will switching to a different port help? Thanks.