i have a macbook 2GHz Intel Core 2 Duo, 2GB memory, OSX 10.5.2....lately i have been having problems with ichat.

1. when i am chatting i get this error :
aim service error: serv:requesttimeout
i have been getting it quite a bit. i click ok and then it slows down the chat messages. What could be the problem. i have tried changing the ports. right now here is the server:slogin.oscar.aol.com Port:5190

2. when i click on preferences and go to audio/video it says that this computer does not support video conferencing. Also, the past 5 times i have tried to audio chat or video chat it will not let me saying communication error.

anyone else having this problem or any solutions?