title: MVC3 Site losing values stored in session
body: <p>So, this morning we lost power to our server hosting our MVC3 website.  Since it has come back on line, we are randomly losing our session values.  This only happens on this server, not on local or staging servers.  This has nothing to do with timeouts, as the session clears after as few as 5 minutes.  Session is set to expire after 12 hours.  The SessionID for the session doesn't change when the values are lost.</p>
  
  <p>I'm using Log4Net and have added a lot of logging to try and pinpoint this issue.  I have added Session_Start and Session_End events to Global.asax as well as checks for session values all through out my controllers.  </p>
  
  <p>I have an Index view that displays a list of items.  Each item in the list has a link that takes you to a Details view.  I check the session values on each Action call.  The session values always seem to go missing when calling back to the Index view from the Details view.  What I have noticed is that each time my session values are lost, there is a Session_Start event that fires. </p>
  
  <p>There isn't a Session_End event, only a Start.  What would cause this Start to happen?  </p>
  
  <p>If there is any more info I can provide, please comment and I will add what I can.</p>