diff --git a/wp-includes/default-filters.php b/wp-includes/default-filters.php
index eb0064e45..086136185 100644
--- a/wp-includes/default-filters.php
+++ b/wp-includes/default-filters.php
@@ -173,7 +173,7 @@ add_action('sanitize_comment_cookies', 'sanitize_comment_cookies');
 add_action('admin_print_scripts', 'wp_print_scripts', 20);
 add_action('mce_options', '_mce_set_direction');
 add_action('init', 'smilies_init', 5);
-
 add_action( 'plugins_loaded', 'wp_maybe_load_widgets', 0 );
+add_action( 'shutdown', 'wp_ob_end_flush_all', 1);
 
 ?>
\ No newline at end of file
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 71eae710d..4ee77810a 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1530,4 +1530,11 @@ function wp_widgets_add_menu() {
 	ksort($submenu['themes.php'], SORT_NUMERIC);
 }
 
+// For PHP 5.2, make sure all output buffers are flushed
+// before our singletons our destroyed.
+function wp_ob_end_flush_all()
+{
+	while ( @ob_end_flush() );
+}
+
 ?>
\ No newline at end of file