--- file_download.php.orig	2009-02-15 16:24:25.656250000 -0600
+++ file_download.php	2009-02-15 16:25:05.187500000 -0600
@@ -89,6 +89,7 @@
 	if ( ob_get_length() ) {
 		@ob_end_clean();
 	}
+	ob_end_flush();
 
 	# Make sure that IE can download the attachments under https.
 	header( 'Pragma: public' );