title: User.IsInRole expires after compile in DEV or X minutes in Production
body: <p>Based on the MVC4 Template Project I started to use Roles.</p>
  
  <p>In the View where I need to give permission only to Admin Role Users like:</p>
  
  <pre><code>@if (User.IsInRole("Admin"))
  {
      // You can do it
  }
  else
  {
      // You can't do it
  }
  </code></pre>
  
  <p>When I compile in DEV, User.IsInRole("Admin") returns always false, and in production environment, it starts returning false after a period of time.</p>