I know for a fact that the iSight built into my MBP works. It works when video-conferencing with other computers on my network and it works flawlessly in iMovie (and of course video preview in iChat). So I don't think it is an iSight issue. However, when I try to start/accept a video chat, I cannot connect with anyone. I have Comcast Cable Internet and checking on Speakeasy.com I range from 2,000 kbps to 6,000 kbps, depending on the time of day. I really need this to work because its a key reason I got my dad to buy this MBP for his work. Thanks. P.S. Yes I do have bandwidth limit set to 'none'.