title: Install Flash Player on Ubuntu 14.04
body: <p>I have tried to install Flash Player over the "Ubuntu Software Center", but it won't work on Firefox. I had prevously installed Pepper Flash and now I have messed up with all. When I want to watch a video on Youtube, it appears "The plugin is disabled" and after a few seconds, the HTML5 Player loads and plays the video. All plugins are activated. On Facebook it won't even appear. It shows following: <img src="https://i.stack.imgur.com/mvQNU.png" alt="Flash appears not installed"></p>
  
  <p>I don't know how to proceed. It won't work on Facebook neither Chromium...
  From time to time it shows a yellow square with a "X" in it with following message instead of this above: "Failed to load libpepflashplayer.so".
  It's very annoying. How can I wipe all this players from my machine and begin from zero?</p>
  
  <p>Thanks in advance</p>