[ubuntu] Slow performance on my netbook

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http://ubuntuforums.org – Hello, I am a beginner and would like to improve my cpu performance. My netbook is very slow and I'm sure it shouldn't be this slow. Sometimes I can't see small videos and it takes forever to open firefox or a simple folder. I don't really think that ubuntu is the problem, but I don't know how to use it so I need some guidance from ubuntu users in order to diagnose and fix the problem. The reason I don't think the problem is the OS is because when I used windows 7 it was slow too. I thought changing to linux would make it a little faster. This thing used to be a lot faster, I don't know what h (Hardware)