First of all my name's Billy. Im trying to figure out how to run two webcams at the same time on my imac. Im running mountain lion osx 10.8. Im using this cool application called icam(http://skjm.com/icam/) to keep an eye on my bedroom which is why i want to run two webcams. FYI, Ive experimented a little and it seems like i can run the built in isight on facetime and then when i try to run the additional webcam on photobooth it doesnt work. I read somewhere that it is an issue with the usb bus? (Whats the usb bus and can i change it???) Any software/work arounds to be able to do it?