6 months should be more than enough time for testing to be completed. Someone from the SiteAdvisor team will investigate this to see what is causing the delay.
Google Translation (looks okay to me) :
6 mois devrait être plus que suffisant pour les tests à effectuer. Je vais demander à quelqu'un de SiteAdvisor pour enquêter sur cette option pour voir quelle est la cause du retard.
Edit : Off topic, sort of, but relevant. The SiteAdvisor page has a site owner's comment which does not display properly (in Chrome) using Unicode (UTF-8). Changing the encoding (in Tools->Encoding) to either of the 'Western' options makes the page display as it should.