title: CodeIgniter Session Expires on Page Refresh
body: <p>We have a CodeIgniter based SAAS application. Sessions are stored in the database.
  We use <a href="http://codeigniter.com/wiki/Session_Hybrid" rel="nofollow">this class</a> as a replacement for CI sessions</p>
  
  <p>With one specific customer ( same office, multiple users, same IP ), the session is getting reset or destroyed on a page refresh.</p>
  
  <p>This has never happened before with any other users or from other location. I am not able to reproduce this issue.</p>
  
  <p>Steps:</p>
  
  <ul>
  <li>User Logs in &amp; sees home Page.  </li>
  <li>User begins navigation by clicking some link   </li>
  <li>Session times out and they are prompted to login again  </li>
  <li>And this continues after each login.</li>
  </ul>
  
  <p>Session expiration is set to 3000 s and time_reference is GMT and sess_time_to_update = 300 s.</p>
  
  <p>Any help on how to go about investigating this issue will help.</p>
  
  <ul>
  <li>This happens in IE , Chrome and therefore does not seem to be a browser issue.</li>
  <li>This same set of users have never had this issue before.</li>
  </ul>