my friend has a dual 500 G4. He installed tiger mainly for the purposes of video/audio ichatting. We did it all the time in single video/audio mode and it worked great. now that he upgraded to tiger, he cant seem to video chat with anyone, and audio chatting just leaves an "Insufficient Bandwidth" message. His computer is indeed below the required specs for multiple video, but audio (single and multi) should work fine. How could tiger break this functionality? And is there anything that can be done to fix the problems? any ideas?