Don't try to do CAS auth if the unl_sso cookie isn't set.

library/App/Controller/Action.php

@@ -18,23 +18,13 @@ class App_Controller_Action extends Unl_Controller_Action
     
     protected function _transparentCasLogin()
     {
-        $session = new Zend_Session_Namespace(__CLASS__);
-        
-        if (!array_key_exists('unl_sso', $_COOKIE)) {
-	        // Only passively check for a login once per hour (per user)
-	        if ($session->lastCasCheck > time() - 60*60) {
-	            return;
-	        }
-            $session->lastCasCheck = time();
-        } else {
-        	$session->lastCasCheck = 0;
-        }
-        
     	// The auth module is doing its thing (probably an active login or logout). Let it be.
     	if (get_class($this) == 'Auth_IndexController') {
     		return;
     	}
     	
-    	Auth_UserModel::authenticateUser();
+        if (array_key_exists('unl_sso', $_COOKIE) || Zend_Auth::getInstance()->hasIdentity()) {	
+            Auth_UserModel::authenticateUser();
+        }
     }
 }