--- /www/wp-includes/post-template.php (WP 3.0)	Thu Jun 17 15:13:33 2010
+++ /www/wp-includes/post-template.php (Working copy)	Fri Jun 25 15:56:15 2010
@@ -153,7 +153,7 @@
 function get_the_guid( $id = 0 ) {
 	$post = &get_post($id);
 
-	return apply_filters('get_the_guid', $post->guid);
+	return apply_filters('get_the_guid', $post->guid, $post );
 }
 
 /**