Sorry, only idea I have.
Everytime I plug my Iphone4 in, itunes boots normally, then the screen flashes black and redraws and the cam light goes on. Why is my camera turning on? When I unplug my phone, camera turns off, screen flashes.
W7, ITunes10.7, and IPhone 4
Also running ManyCam, but I've shut it off and the camera stays on.