The sound is the rolling shutter inherent with this model. It is not the cameras strong suit but after all it is a camera not a video recorder. A video recorder does not make a good camera even with a photo feature put in it.
There was a report that someone sent their camera in and got it back with a 1.03 update. Thus far, there is nothing to support that there is a 1.03 update. The most recent is the one you have, 1.02.