title: codeigniter session expires frequently
body: <p>I'm using codeigniter for my app</p>
  
  <p>what my problem is session is expiring even though user is active on the site.</p>
  
  <p>These are the session settings.. i'm using DB session</p>
  
  <pre><code>$config['sess_cookie_name']     = 'ci_session';
  $config['sess_expiration']      = 7200;
  $config['sess_encrypt_cookie']  = FALSE;
  $config['sess_use_database']    = TRUE;
  $config['sess_table_name']      = 'edu_sessions';
  $config['sess_match_ip']        = FALSE;
  $config['sess_match_useragent'] = TRUE;
  $config['sess_time_to_update']  = 300;
  </code></pre>
  
  <p>any solution for this.</p>
  
  <p>help me i have to fix it</p>
  
  <p>here is the codeigniter  <a href="http://codeigniter.com/forums/viewthread/182755/" rel="nofollow">forum link</a></p>