Not really related to your problem it seems, but when you were talking about your mysterious page possession I remembered with my laptops and that pesky square mouse thing that controls the pointer. When I am typing or doing other things I sometimes forget and let my palms or lower thumbs brush up against the mouse pad and that would sometimes cause a variety of mysterious actions. You see that little touch pad also has many other functions incorporated into it. Along the sides of the touch pad are sometimes scroll or page up and down controls. They are supposed to make navigation easier but when you have us big handed people trying to control the blasted thing........