[ubuntu] I need Help

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http://ubuntuforums.org – I need help. I was told that Linux was a more stable computer, and I enjoyed what it stood for. But I'm not a computer programmer and I've been unable to get help for the issues that I have and I don't know what to do. 1. Dwell Click randomly stops working. I shut it down, log off it doesn't start off. Then randomly one day I start it up and it is working again. 2. Freezing. I get this error sometimes where it says it can't unpack just started happening yesterday. But the whole screen has been freezing as soon as I get up and walk away. I haven't installed anything in (Hardware)