My friend's new Toshiba laptop has started having intermittent touchpad problems. Sometimes the cursor does not respond at all for a few minutes, or sometimes when he moves his finger on the touchpad the screen zooms in or zooms out. The zooming was happening in IE and on the Start Screen. When it happens on the Start Screen, he says it is the same effect as you see when you click the (-) sign in the lower right corner of the Start Screen.

Any ideas?