Just installed this game demo and am having problems moving around the landscape. When I stop input by keyboard, my character moves to the left without my input, this happens to a degree when I am moving him around so aiming etc is quite difficult.
This is on Win7 Home Premium +SP1 64bit, Phenom II x4 840 3.2G, Radion HD5670 1G mem, 8G ram. Attached is a Saitek P2500 Rumble game pad and a MS USB optical mouse.
I have seen this with the Dr. Who games released by the BBC so didn't play them either.
Any ideas what might be causing it?