Index: wp-includes/comment.php
===================================================================
--- wp-includes/comment.php	(revision 17844)
+++ wp-includes/comment.php	(working copy)
@@ -105,9 +105,14 @@
  * @param int $post_id The ID of the post
  * @return array $comments The approved comments
  */
-function get_approved_comments($post_id) {
-	global $wpdb;
-	return $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1' ORDER BY comment_date", $post_id));
+function get_approved_comments($post_id) {		
+	$comment_args = array(
+		'post_id' => $post_id,
+		'status' => 'approved',
+		'orderby' => 'comment_date',
+		);
+	
+	return get_comments( $comment_args );
 }
 
 /**