Index: wp-includes/post.php
===================================================================
--- wp-includes/post.php	(revision 5848)
+++ wp-includes/post.php	(working copy)
@@ -1113,7 +1113,7 @@
 	$key = md5( serialize( $r ) );
 	if ( $cache = wp_cache_get( 'get_pages', 'page' ) )
 		if ( isset( $cache[ $key ] ) )
-			return apply_filters('get_pages', $cache[ $key ], $r );
+			return $cache[ $key ];
 
 	$inclusions = '';
 	if ( !empty($include) ) {