It looks like an issue with overlays. If you view the module in the module manager with the text:
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You should see an inline value of:
<div style="width: 100%; text-align: center; margin-top: 160px;">
Adjust this value to 30px instead of 160px to bring the text up and out of the way of the menu system.
That didn't fix it, actually it created a different problem. updating that line to 30px disabled the drop down box from the search module.
And the menu still doesn't work (on the homepage, works fine on the inner pages)