--- file_download.php.rev.1.25.4.1	2004-08-13 22:54:35.000000000 +0800
+++ file_download.php	2004-08-13 22:54:06.000000000 +0800
@@ -69,6 +69,8 @@
 	header( 'Content-Length: ' . $v_filesize );
 	header( 'Content-Disposition: filename=' . file_get_display_name( $v_filename ) );
 	header( 'Content-Description: Download Data' );
+	header( 'Pragma: no-cache' );
+	header( 'Expires: 0' );
 
 	# dump file content to the connection.
 	switch ( config_get( 'file_upload_method' ) ) {