title: Roles not working in ActiveDirectoryMembershipProvider
body: <p>I have a web-site which uses forms auth and ActiveDirectoryMembershipProvider. I have an Action in controller like this:</p>
  
  <pre><code>[Authorize(Roles = "jira-developers")]
          [HttpGet]
          public ActionResult MonitorForm()
          {
              var list = Dal.GetActualData();
              return View(list);
          }
  </code></pre>
  
  <p>I'm totally sure that my user is in group with Name="jira-developers", but auth fails. If i remove Roles parameter, the auth will work fine. </p>
  
  <p>What am i doing wrong? I'll be gratefull for any help!</p>