Index: C:/xampp/htdocs/wordpress_trunk/wp-includes/post.php
===================================================================
--- C:/xampp/htdocs/wordpress_trunk/wp-includes/post.php	(revision 9878)
+++ C:/xampp/htdocs/wordpress_trunk/wp-includes/post.php	(working copy)
@@ -464,7 +464,7 @@
 		'order' => 'DESC', 'include' => '',
 		'exclude' => '', 'meta_key' => '',
 		'meta_value' =>'', 'post_type' => 'post',
-		'post_parent' => 0, 'suppress_filters' => true
+		'suppress_filters' => true
 	);
 
 	$r = wp_parse_args( $args, $defaults );