I've made a small update to this template:

v2.0 update to includes/templates/simple_zen/common/tpl_header.php for spacing gap in IE6.

If you are already running 1.9, the only change is:
Open up includes/templates/YOUR_TEMPLATE/common/tpl_header.php and
remove the:

<div class="clearBoth"></div>

that is directly after:

<div id="navMainSearch"><?php require(DIR_WS_MODULES . 'sideboxes/search_header.php'); ?></div>