Index: lib/grade/grade_object.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lib/grade/grade_object.php,v
retrieving revision 1.27.2.6
diff -u -r1.27.2.6 grade_object.php
--- lib/grade/grade_object.php	17 Sep 2010 03:09:29 -0000	1.27.2.6
+++ lib/grade/grade_object.php	16 Dec 2010 12:17:54 -0000
@@ -173,13 +173,14 @@
             $wheresql = implode("AND", $wheresql);
         }
 
-        if ($datas = get_records_select($table, $wheresql, 'id')) {
+        if ($rs = get_recordset_select($table, $wheresql, 'id')) {
             $result = array();
-            foreach($datas as $data) {
+            while ($data = rs_fetch_next_record($rs)) {
                 $instance = new $classname();
                 grade_object::set_properties($instance, $data);
                 $result[$instance->id] = $instance;
             }
+            rs_close($rs);
             return $result;
 
         } else {