Dying reverting my mouse scheme?

[Krule]

Okay so I have just dived back in to this glorious game and am having a blast.

There is just one peculiar thing that keeps happening to me. When I create a new character I can use my mouse as normal. I can right click to move the camera and scroll in and out of view with my mouse-wheel. But when I DIE it seems to go haywire. I can't use my mouse wheel to change my view and my right click to strafe the camera goes haywire too. It becomes super sensitive and goes inverted.

How do I fix this?