Interference noise on Videos seems to occur when uploading at the same time as taking Videos. Make sure all uploads are done (or turn off the manager on the computer) before taking Videos and the interference noise will not occur. It's an unfortunately occurance with the Eye-Fi Share Card, but if I take my Video first, and then take any pictures I want after while it's uploading the video, the video sound turns out good (and the pictures keep the camera power on while the video uploads)
