Index: privatemsg_realname/privatemsg_realname.module
===================================================================
RCS file: /cvs/drupal/contributions/modules/privatemsg/privatemsg_realname/privatemsg_realname.module,v
retrieving revision 1.1
diff -u -p -r1.1 privatemsg_realname.module
--- privatemsg_realname/privatemsg_realname.module	21 Nov 2010 14:49:01 -0000	1.1
+++ privatemsg_realname/privatemsg_realname.module	21 Jan 2011 10:20:45 -0000
@@ -99,11 +99,12 @@ function theme_privatemsg_realname_usern
 function privatemsg_realname_privatemsg_sql_participants_alter(&$fragments, $thread_id) {
   // Select the realname.
   $fragments['select'][]      = 'r.realname';
-  // Also select homepage to avoid php notices.
-  $fragements['select'][]     = 'u.homepage';
 
   // Join realname table.
   $fragments['inner_join'][]  = 'LEFT JOIN {realname} r ON (r.uid = u.uid)';
+
+  // Add realname to GROUP BY.
+  $fragments['group_by'][]    = 'r.realname';
 }
 
 /**