I have that mouse connected to my thinkpad via usb. It has worked for years. Recently when I have the mouse inactive over text, at times the cursor begins to move to the left in little short regular bursts.
As the computer is new I'm not sure if this is a mouse problem, usb connection problem or a computer ptoblem.
Any direction will be appreciated.
EDIT: I tried everything but the obvious. I had a dark surface for the mouse to be on. I changed the colour of the surface - problem solved.