title: ASP.NET Forms Authentication expiring even with activity
body: <p>I have a ASP.NET MVC site which uses ASP.NET Formsauthentication I have the ticket set to expire after 20 minutes of inactivity. However it is expiring after 20 minutes no matter what.</p>
  
  <p>I guess what I am asking is, is this the right functionality of it or do I have some issue and if so a solution to this would be appreciated.</p>