--- site_map/site_map.module.orig	2009-05-06 18:06:43.000000000 -0700
+++ site_map/site_map.module	2009-05-06 18:06:34.000000000 -0700
@@ -216,7 +216,7 @@
       FROM {node} n
       INNER JOIN {users} u ON u.uid = n.uid
       WHERE n.type = 'blog' AND n.status = 1
-      GROUP BY u.uid
+      GROUP BY u.uid, u.name
       ORDER BY numitems DESC, u.name";
     $result = db_query_range($sql, 0, 10);
     while ($blog = db_fetch_object($result)) {