Maybe someone can help. Recently my mouse has taken on a life of its own. When I click on a tab and there is another tab under it they both will open. If I close a tab the one under it will open. Also if I happen to click on a blank part of a screen it will automatically highlight the whole page. The sensitivity is way off I may have to click on something 4-5 times to mark it or to get a drop down. If I have to make a correction and I move the mouse to a certain point on a line everything gets highlighted and the curser dose not select a point to start typing.