Index: wp-includes/class.wp-scripts.php
===================================================================
--- wp-includes/class.wp-scripts.php	(revision 19820)
+++ wp-includes/class.wp-scripts.php	(working copy)
@@ -31,6 +31,10 @@
 	var $default_dirs;
 
 	function __construct() {
+		add_action( 'init', array( $this, 'init' ) ); 
+	}
+
+	function init() {
 		do_action_ref_array( 'wp_default_scripts', array(&$this) );
 	}