I've noticed that when I talk on my left ear (which is how I always talk), I have CRAZY problems with the proximity sensor. I cannot go through even ONE call without either putting them on speakerphone, hanging up, going into contacts or dialing numbers by accident. However, when talking on my right ear, no problems at all it seams. I don't know why but it's annoying as I can't talk on my right ear, it just doesn't feel right and I'm not used to it. What have your guys' experiences been with this?