i am running on snow leopard right now, so if anyone is familiar with it, please help me. i've done everything. i have restarted my computer several times. i shut it down, unplugged it, logged in to a different user, unplugged every usb (even if it is irrelevant. just to say i tried.) i looked into every application that used the built in camera (ichat, newest and previous imovies, photobooth, skype, even webcam pic capture on myspace,) and nothing is working. if you can help me out, i will be forever grateful.