I'm thinking about buying a certain MacBook Pro Core Duo (15", 2Ghz)and the seller has expressed a problem with the built-in iSight camera. He says that prolonged video chatting (he estimates an hour or so) results in the MacBook Pro crashing, forcing him to do a hard restart. Is there something that could be done to fix this if I were to purchase the MacBook Pro? Is this a known happenstance with Core Duo MacBook Pros or is it a localized event? I don't anticipate video chatting for over an hour at a time with anyone, but I'd like to know that my laptop isn't going to crash because of it. Thanks.