Hello WQs200. It is true that many people can hear the Optical Image Stabilization system rattle if their device is shaken, but I think you may need to have your device looked at if moving it a little is causing video, for example, to 'warp violently'. If this warping is happening with relatively normal movements from yourself, or even slightly exaggerated movements, then I suggest you get your device looked at. Your symptoms sound like you may have a genuine problem.