Hello, I have a 2011 15'' Macbook Pro base model with lion. Computer is babied no exposure to anything. I having issue with using my gestures such as 3 finger swipe between pages, app expose, Launch pad. Is there anything I can do to fix these issues. When I try swipe between pages everything just gets highlighted or it goes a page back not sure why I am having these issues. These did work before just not now?