I facetime my girlfriend a lot and we both use our Macbooks. I have a retina MBP 15" and she uses a year old macbook air. When I facetime her I can hear every single thing I do echo back to me. Every word I say and even really light sounds like my roommate opening the door or something across the apartment. It's extremely sensitive and extremely annoying. Does anyone else experience this or have a fix?? At first I thought it was just her volume but it even happens when she has it on extremely low volume.