I can see what the problem is, but not sure why.
If I view the source of the page, the menu formatting and classes/styles are wrong.
For example, this is some HTML source from our demo:
<div class="dropdownmenu" id="menubar">
<div class="KartrisMenu-Horizontal" id="ctl00_UC_NavigationMenu_menFrontEnd">
<ul class="KartrisMenu">
<li class="KartrisMenu-Leaf">
<a href="/Default.aspx?" class="KartrisMenu-Link" title="Home">
This is the same part from your site:
<div class="dropdownmenu" id="menubar">
<a href="#UC_NavigationMenu_menFrontEnd_SkipLink">
<img alt="Skip Navigation Links"
src="/WebResource.axd?d=unxaaAdkYa7EhBJrXP1S8Q2&t=634244695177776250"
width="0" height="0" style="border-width:0px;" /></a>
<div id="UC_NavigationMenu_menFrontEnd">
<ul class="level1">
<li><a title="Home" class="level1" href="/Default.aspx?">Home</a>
I noticed the breadcrumbtrail seems to show up in a table cell, judging by the background image.
Are you sure there are no other changes that might be responsible for this?