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[ubuntu] need help with unresponsive gui

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linux-howto

http://ubuntuforums.org – a few days ago, 4 days as of this morning i decided to install Ubuntu 12.04. i installed from the cd and i installed updates and the recommended third party software. everything went fine and for a few hours i had fun getting used to the new operating system. everything was dandy except all of a sudden i found myeslf unable to click on the left bar (with all the buttons). this was strange. i was also unable to click on the top bar aswell. my mouse could move freely and i could click and right click on the tabs in Firefox. clicking repeatedly had no effect on the sidebar whatsoever, it was as i (Hardware)