Using a mid-2009 15" MBP, 3.06 GHz. iChat has been using significantly more CPU during a video chat than before the upgrade. Anyone else seeing this? I'm currently using the 9400M and not the 9600GT, but I don't think it would have any effect on this. Specifically, it uses about 100% (out of 200). Screen shot of the activity monitor is attached. I do notice, however, that during the video chat, it is not using the iChat process AND the vcencoder process that is also used in leopard. It just uses the iChat process. I still don't think it should be using so much CPU to video chat.