Olympus SZ-31 chattering auto focus issue?

The thing is, it doesn't matter what setting you have turned on, or off. This camera makes this noisy constantly, whether in movie mode or not. Put your ear up to the lens and as long as the camera is not stationary, you will hear it.

Here is a video showing exactly the kind of noise I am experiencing - http://www.youtube.com/watch?v=Ju1ojdP6imQ

That isn't a helicopter in the background, that's the camera.