Hi Guys, Has anyone experienced problems with the incall voice quality with the Arc? Every now and then when I am on the phone to my other half (she has the Arc, not me unfortunately) her voice goes tinny and echoey. A few other people have mentioned this to her while she has been talking on the phone so I have ruled out the fact that the problem is my end. She has said that there is not problem with the sound her end, just what others are hearing when she is on the phone to them. It's not a constant issue and only lasts 5-10 seconds when it does happen. Is this a known fault or is it fixable without having to send the phone back for repair?