--- program/include/rcube_html_page.php~ 2009-06-22 11:20:34.000000000 -0500 +++ program/include/rcube_html_page.php 2010-02-01 12:21:44.000000000 -0600 @@ -164,7 +164,13 @@ $__page_header.= ' content="text/html; charset='; $__page_header.= $this->charset . '" />'."\n"; } - + // add hint to disable DNS prefetching + if (!headers_sent()) { + header('X-DNS-Prefetch-Control: off'); + } else { + $__page_header.= '<meta http-equiv="x-dns-prefetch-control" content="off" />'."\n"; + } + // definition of the code to be placed in the document header and footer if (is_array($this->script_files['head'])) { foreach ($this->script_files['head'] as $file) {