The mouse on my laptop keeps moving on its own after I stop touching it?

The mouse on my laptop keeps moving on its own after I stop touching it.What makes this begin and how do I stop it other than waiting for it to stop.
Mouse trouble, March 2005


done
The mouse is built into the keyboard of the laptop. It looks like an eraser on a pencil.

mouse problem, March 2005
Does the mouse have a ball at the bottom? If it does this will need a clean. There should be a way to release the ball on the underside of your mouse. Inside the area where the ball sits there will be three rollers. These are probably clogged with dust. Use a Cotton Bud or the end of a pencil to clean out the dust.

Sam Turner, March 2005