--- loncom/auth/lonacc.pm	2011/08/09 01:35:31	1.137
+++ loncom/auth/lonacc.pm	2012/05/30 20:29:49	1.138
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.137 2011/08/09 01:35:31 raeburn Exp $
+# $Id: lonacc.pm,v 1.138 2012/05/30 20:29:49 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -438,9 +438,17 @@ sub handler {
 
 # ------------------------------------------------------ Check if load balancer 
 
-        ($is_balancer,$otherserver) =
-            &Apache::lonnet::check_loadbalancing($env{'user.name'},
-                                                 $env{'user.domain'});
+        my $checkexempt;
+        if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
+            if ($env{'user.loadbalcheck.time'} + 600 > time) {
+                $checkexempt = 1;    
+            }
+        }
+        unless ($checkexempt) {
+            ($is_balancer,$otherserver) =
+                &Apache::lonnet::check_loadbalancing($env{'user.name'},
+                                                     $env{'user.domain'});
+        }
         if ($is_balancer) {
             $r->set_handlers('PerlResponseHandler'=>
                              [\&Apache::switchserver::handler]);