First, I updated Firefox to the latest version but I have noticed that Firefox has a lot of problems and relatively slow to browse sites and also slow to respond, however, most of the Firefox browser crashes all the time, causing the system to freeze ... For the first time get a problem with RealPlayer Browser Record Plugin? https://addons.mozilla.org/en-US/firefox/blocked/i106 http://i45.tinypic.com/9qjzo5.jpg