I had a similar problem and was produced by my work poxy if you are behind a proxy, I recommend you disable it in your browser while you do local tests.
---------------------- google translator -- Díaz Luis TSU Analisis de Sistemas Universidad de Carabobo http://web2pyfacil.blogspot.com/ Facultad de Odontología<http://www.odontologia.uc.edu.ve/index.php?option=com_content&view=article&id=102&Itemid=85>
