[ubuntu] mouse problems

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http://ubuntuforums.org – Ubuntu 12.04 LTS on a Samsung Q35 kaptop The mouse pad has stopped working, only the buttons work. The external mouse is also behaving very oddly, the mouse pointer works, but the button is not working properly, it has to be pressed many times or held down to select anything, and when anything that I select behaves as though the mouse is being clicked all over the screen, settings will keep changing, the page will scroll as though i'm using the scrollbar, sliders will move up and down, tabs will toggle etc, so everything is completely unusable with the mouse, cannot even use the browser as (Hardware)