You might have noticed that the search widget isn't using the correct style when using this theme. Here's a non-dirty fix (In other words: without editing r_sidebar.php, so that you can still use the nifty widget interface to move the search-widget around):
Open up the theme's functions.php and add this at the very end:
<?php
function widget_override_search(){
?>
<li class="widget">
<h2>Search It!</h2>
<?php include (TEMPLATEPATH . '/searchform.php'); ?>
<?php
}
if ( function_exists('register_sidebar_widget') )
register_sidebar_widget(__('Search'), 'widget_override_search');
?>
That's it! Now your search-widget should be working perfectly.