I have a vgn-t17gp.  While surfing or during typing, it just starts to enter the “/” symbol every few seconds, sometimes 2 or 3 strokes at a time.  sometimes, none.  I checked whether it’s stuck, but it ain’t.  During normal operation, (not malfunctioning) when I press the “/” symbol it responds immediately. Already checked for virus, but nothing.  Anyone has this same problem?