--- loncom/interface/domainprefs.pm	2011/08/01 23:33:43	1.147
+++ loncom/interface/domainprefs.pm	2011/08/02 03:11:48	1.148
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.147 2011/08/01 23:33:43 raeburn Exp $
+# $Id: domainprefs.pm,v 1.148 2011/08/02 03:11:48 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -7149,6 +7149,8 @@ sub modify_usersessions {
                             if (ref($changes{$prefix}) eq 'HASH') {
                                 foreach my $lonhost (sort(keys(%{$changes{$prefix}}))) {
                                     $resulttext .= '<li><b>'.$lonhost.'</b> ';
+                                    my $lonhostdom = &Apache::lonnet::host_domain($lonhost);
+                                    &Apache::lonnet::remote_devalidate_cache($lonhost,'spares',$lonhostdom);
                                     if (ref($changes{$prefix}{$lonhost}) eq 'HASH') {
                                         foreach my $type (@{$types{$prefix}}) {
                                             if ($changes{$prefix}{$lonhost}{$type}) {