Seriously thought my laptop PC was dying or something this morning. It was doing the craziest things. Instead of scrolling the browser pages with the mouse wheel everything was resizing instead. Trying to type resulted in various windows popping up instead. Clicked back to the desktop and moved the mouse wheel all my icons expanded or shrunk.
Restarted it, and still the same. Seriously though it either had a virus, or some electronic failure was taking place.
Turns out after a bit (lot) of head scratching the Ctrl key had got jammed down.
My screen is an absolute mess now, icons all over the place.