title: Tomcat, Session Administrator. What does mean session with negative TTL?
body: <p>I found in Session Administrator of Tomcat 7 in list of active HTTPSessions the sessions with negative TTL. What does it mean? Why these sessions not died after expiration of  timout-session?</p>
  
  <p>There are more then 100 with negative TTL, already.</p>
  
  <p>Any Ideas?</p>