--- loncom/auth/lonroles.pm	2008/03/17 14:38:30	1.187
+++ loncom/auth/lonroles.pm	2008/05/12 23:47:37	1.188
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # User Roles Screen
 #
-# $Id: lonroles.pm,v 1.187 2008/03/17 14:38:30 bisitz Exp $
+# $Id: lonroles.pm,v 1.188 2008/05/12 23:47:37 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -106,6 +106,10 @@ sub handler {
 
 # ================================================================== Roles Init
     if ($env{'form.selectrole'}) {
+
+        my $locknum=&Apache::lonnet::get_locks();
+        if ($locknum) { return 409; }
+
         if ($env{'form.newrole'}) {
             $env{'form.'.$env{'form.newrole'}}=1;
 	}