I upgraded to Leopard and video conferencing isn't working on ichat. I have a MBP, C2D, 2.33 GHz, 2 GB RAM, 256 MB ATI RADEON. When I go into the ichat Preferences pane and click on Video/Audio, there is a message ' This computer does not support videoconferencing.' What the ??? isight integrated into the MBP, and not video capable ?? How can I solve this, it's really annoying.