I've had my epm2 for a few months now and the dial (wheel) has suddenly become very loose. That is, it seems overly sensitive. For example in playback mode, if I press on the right side to move to the next picture, it interprets this as an anti-clockwise motion and zooms out to the calendar view. Similarly, if I rotate clockwise to zoom in, it often zooms out first. Is this a known problem? Will Olympus (Australia) fix under warranty?