[ubuntu] Mouse cursor problem

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http://ubuntuforums.org – Hello community, I recently installed Ubuntu from windows and I have a problem with the mouse cursor. 1) It keeps disappearing every time I click anywhere and after I move it comes back; 2) It flashes when I move it over some buttons. Does anyone knows what I am talking about? If yes, is this easy to solve? Yes, I'm new at Linux. I'd really love to keep using the OS without this sticky problem. Thank you for your attention. (Hardware)