Index: lams_central/src/java/org/lamsfoundation/lams/web/SessionListener.java
===================================================================
diff -u -r665bafc925d571fea2e089e161a7d164d73c96bd -r5dae1024bc102de889b546c6500c311796d487b1
--- lams_central/src/java/org/lamsfoundation/lams/web/SessionListener.java	(.../SessionListener.java)	(revision 665bafc925d571fea2e089e161a7d164d73c96bd)
+++ lams_central/src/java/org/lamsfoundation/lams/web/SessionListener.java	(.../SessionListener.java)	(revision 5dae1024bc102de889b546c6500c311796d487b1)
@@ -33,6 +33,7 @@
 import org.lamsfoundation.lams.util.ConfigurationKeys;
 import org.lamsfoundation.lams.util.LanguageUtil;
 import org.lamsfoundation.lams.web.filter.LocaleFilter;
+import org.lamsfoundation.lams.web.session.SessionManager;
 
 import java.util.Locale;
 
@@ -77,18 +78,19 @@
 //		SessionListener.log.error("Error while getting authentication manager.", e);
 //	    }
 //	}
-//
-//	// clear the authentication cache when the session is invalidated
-//	HttpSession session = sessionEvent.getSession();
-//	if (session != null) {
-//	    SessionManager.removeSessionByID(session.getId(), false, true);
-//
+
+
+	HttpSession session = sessionEvent.getSession();
+	if (session != null) {
+	    SessionManager.removeSessionByID(session.getId(), false, true);
+
+//          clear the authentication cache when the session is invalidated
 //	    UserDTO userDTO = (UserDTO) session.getAttribute(AttributeNames.USER);
 //	    if (userDTO != null) {
 //		String login = userDTO.getLogin();
 //		Principal principal = new SimplePrincipal(login);
 //		SessionListener.authenticationManager.flushCache(principal);
 //	    }
-//	}
+	}
     }
 }
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