There is something very wrong with the camera/movement for me. The camera seems to be "tilted" to the side, and perhaps offcenter from the movement? Like if I had eyeballs coming out of my right bicep instead of my head. Mining also seems to happen somewhere to the right of the center of my screen, not from the middle.

Screenshot showing the tilt: http://i.imgur.com/tW2h9Dr.png (I un-fullscreened for the screenshot. )