--- wp-includes/http.php        2010-09-30 15:05:06.000000000 -0500
+++ wp-includes/http.php       2010-10-01 12:54:53.000000000 -0500
@@ -22,6 +22,10 @@
 function &_wp_http_get_object() {
        static $http;

+       if( !class_exists( 'WP_Http' ) ) {
+               include_once( ABSPATH . WPINC. '/class-http.php' );
+       }
+
        if ( is_null($http) )
                $http = new WP_Http();