[ubuntu] need help with online videos

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http://ubuntuforums.org – Hello, I need help with online video players. I just installed ubuntu 11.10 about a week ago on my ASUS n50v. I updated everything and installed flash. everything was working fine. then the software center showed a few updates. I installed all of them. since then I cannot watch videos on some of the websites. Youtube works fine ... but videos on CNN, BBC, Facebook.... none of those work. when i click on videos on fb it says that i need to install adobe flash. when i check in the software center it says that it has already been installed. I would really appreciate some help with this since i (Hardware)