--- loncom/interface/lonpreferences.pm	2005/08/16 16:31:09	1.67
+++ loncom/interface/lonpreferences.pm	2005/12/09 23:48:06	1.69
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Preferences
 #
-# $Id: lonpreferences.pm,v 1.67 2005/08/16 16:31:09 albertel Exp $
+# $Id: lonpreferences.pm,v 1.69 2005/12/09 23:48:06 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -188,7 +188,7 @@ sub texenginechanger {
     my $texengine=$userenv{'texengine'};
 
     my $pref=&mt('Preferred method to display Math');
-    my %mathchoices=('' => 'No Preference',
+    my %mathchoices=('' => 'Default',
 		     'tth' => 'TeX to HTML',
 		     #'ttm' => 'TeX to MathML',
 		     'jsMath' => 'jsMath',
@@ -403,7 +403,7 @@ sub verify_and_change_screenname {
         &Apache::lonnet::delenv('environment\.nickname');
         $message.='Reset nickname';
     }
-
+    &Apache::lonnet::devalidate_cache_new('namescache',$user.':'.$domain);
     $r->print(<<ENDVCSCREEN);
 $message
 ENDVCSCREEN