Thickbox module printing titles multiple times

We have instances where the "TB title" is printing multiple times.

I this has occurred on both IE7 and Firefox 3, but does not occur every time you open the link.

html looks like this

div id="TB_window" style="margin-left: -215px; width: 430px; margin-top: -220px; display: block; opacity: 1;">
<div id="TB_title">
<div id="TB_ajaxWindowTitle"/>
<div id="TB_closeAjaxWindow">
</div>
</div>
<div id="TB_title">
<div id="TB_ajaxWindowTitle"/>
<div id="TB_closeAjaxWindow">
</div>
</div>