Index: src/wp-includes/meta.php
===================================================================
--- src/wp-includes/meta.php	(revision 26270)
+++ src/wp-includes/meta.php	(working copy)
@@ -558,9 +558,9 @@
 		return $cache;
 
 	// Get meta info
-	$id_list = join(',', $ids);
-	$meta_list = $wpdb->get_results( $wpdb->prepare("SELECT $column, meta_key, meta_value FROM $table WHERE $column IN ($id_list)",
-		$meta_type), ARRAY_A );
+	$id_list = join( ',', $ids );
+	$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
+	$meta_list = $wpdb->get_results( "SELECT $column, meta_key, meta_value FROM $table WHERE $column IN ($id_list) ORDER BY $id_column ASC", ARRAY_A );
 
 	if ( !empty($meta_list) ) {
 		foreach ( $meta_list as $metarow) {