Hedgehog 4 cursor moving on its own.

After no discernable amount of time or event occurring the cursor on my Hedgehog 4x will start moving around the screen, clicking occasionally, and in general just creating havoc. It acts as if I'd recorder a macro and was running it in real time. Has anyone run into this? Or, any ideas of why or how to stop it from doing this?
Thanks in advance for any help!   -Mark