Comment 13 for bug 897794

@Sharif: Did you try to download the plugin directly from the website I mentioned in comment #9? I'm on Ubuntu 11.10 with the very latest official of Firefox (FF 8.0) from Ubuntu and the plugin works just fine for me. See the attached screenshots. Of course, the "Ubuntu; " part of the user agent string is not there, because I'm using user agent to remove it. :) It may be the website has a later version than is available from within FF itself, or perhaps there's something different about the Portuguese version of FF. Hope this helps.