--- loncom/auth/lonacc.pm	2014/05/05 23:17:12	1.155
+++ loncom/auth/lonacc.pm	2014/05/17 21:43:55	1.156
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.155 2014/05/05 23:17:12 raeburn Exp $
+# $Id: lonacc.pm,v 1.156 2014/05/17 21:43:55 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -283,7 +283,7 @@ sub sso_login {
     my ($r,$handle,$username) = @_;
 
     my $lonidsdir=$r->dir_config('lonIDsDir');
-    if (($r->user eq '') || ($username ne '') ||
+    if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') ||
         (defined($env{'user.name'}) && (defined($env{'user.domain'}))
 	  && ($handle ne ''))) {
 	# not an SSO case or already logged in