title: MembershipUser.IsOnline is true even after logout
body: <p>I'm currently creating a website using Visual Studio 2010.  I'm using the default membership schema in SQL Server 2008 for user authentication.  Now I'm facing the following problem.  </p>
  
  <p>When a user logs out, the membership.IsOnline property of that user should be set to false.  However that it is not happening; membership.IsOnline property of that user is still true.  </p>
  
  <p>I'm using the LoginStatus control to provide a logout link to the user.</p>
  
  <p>I have tried to follow <a href="https://stackoverflow.com/questions/9918033/user-isonline-true-even-after-formsauthentication-signout">User.IsOnline = true even after FormsAuthentication.SignOut()</a>. But results nothing.</p>