--- loncom/interface/loncommon.pm	2006/08/18 20:24:54	1.446
+++ loncom/interface/loncommon.pm	2006/08/22 17:15:19	1.447
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.446 2006/08/18 20:24:54 albertel Exp $
+# $Id: loncommon.pm,v 1.447 2006/08/22 17:15:19 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2109,6 +2109,9 @@ sub noteswrapper {
 
 sub aboutmewrapper {
     my ($link,$username,$domain,$target)=@_;
+    if (!defined($username)  && !defined($domain)) {
+        return;
+    }
     return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
 	($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
 }