diff --git a/wp-admin/admin-ajax.php b/wp-admin/admin-ajax.php
index 9dd4eec5bb..75e02feb20 100644
--- a/wp-admin/admin-ajax.php
+++ b/wp-admin/admin-ajax.php
@@ -627,17 +627,16 @@ case 'add-comment' :
 
 	require_once( './includes/default-list-tables.php' );
 	$table = new WP_Comments_Table();
+	$table->prepare_items();
 
-	global $comments;
-
-	if ( !$comments )
+	if ( !$table->has_items() )
 		die('1');
 
 	if ( get_option('show_avatars') )
 		add_filter( 'comment_author', 'floated_admin_avatar' );
 
 	$x = new WP_Ajax_Response();
-	foreach ( (array) $comments as $comment ) {
+	foreach ( $table->items as $comment ) {
 		get_comment( $comment );
 		ob_start();
 			$table->single_row( $comment->comment_ID, $mode, $status, true, true );
@@ -660,15 +659,14 @@ case 'get-comments' :
 
 	require_once( './includes/default-list-tables.php' );
 	$table = new WP_Comments_Table();
+	$table->prepare_items();
 
-	global $comments;
-
-	if ( !$comments )
+	if ( !$table->has_items() )
 		die('1');
 
 	$comment_list_item = '';
 	$x = new WP_Ajax_Response();
-	foreach ( (array) $comments as $comment ) {
+	foreach ( $table->items as $comment ) {
 		get_comment( $comment );
 		ob_start();
 			$table->single_row( $comment->comment_ID, 'single', false, false );
diff --git a/wp-admin/includes/default-list-tables.php b/wp-admin/includes/default-list-tables.php
index be650e15b9..3c79aa4da4 100644
--- a/wp-admin/includes/default-list-tables.php
+++ b/wp-admin/includes/default-list-tables.php
@@ -2111,7 +2111,7 @@ class WP_Comments_Table extends WP_List_Table {
 	}
 
 	function prepare_items() {
-		global $comments, $extra_comments, $total_comments, $post_id, $comment_status, $mode;
+		global $post_id, $comment_status, $mode;
 
 		$post_id = isset( $_REQUEST['post_ID'] ) ? absint( $_REQUEST['post_ID'] ) : 0;
 
diff --git a/wp-admin/includes/meta-boxes.php b/wp-admin/includes/meta-boxes.php
index 2012951eef..71c871a2e7 100644
--- a/wp-admin/includes/meta-boxes.php
+++ b/wp-admin/includes/meta-boxes.php
@@ -460,11 +460,15 @@ function post_comment_meta_box($post) {
 
 	wp_nonce_field( 'get-comments', 'add_comment_nonce', false );
 	add_filter('manage_edit-comments_columns', 'post_comment_meta_box_thead', 8, 1);
+	add_filter('manage_edit-comments_sortable_columns', create_function('', 'return array();'), 8);
+
+	require_once( './includes/default-list-tables.php' );
+	$table = new WP_Comments_Table;
 ?>
 
 <table class="widefat comments-box fixed" cellspacing="0" style="display:none;">
 <thead><tr>
-	<?php print_column_headers('edit-comments'); ?>
+	<?php $table->print_column_headers(); ?>
 </tr></thead>
 <tbody id="the-comment-list" class="list:comment"></tbody>
 </table>