X-Cart forums - Ajax minicart not working in IE

I've relocated the mini-cart to the header area on my site. It is working well in FF but IE has to be refreshed before it displays the content of the mini-cart.
I've seen other threads in the forum which are similar but seem to be a CSS problem. This issue doesn't seem to be CSS related as a search of the page source doesn't show up the missing text.

Please take a look at the site to see the problem (add an item to the cart from the featured products at the bottom of the home page)
http://bennettdirect.staging.dynamix.com.au/home.php?shopkey=1914
Here is the code I'm using to display the mini-cart:

Code:

{*

$Id: menu_cart.tpl,v 1.52 2009/07/08 12:18:07 joy Exp $

vim: set ts=2 sw=2 sts=2 et:

*}

{if $login ne ""}

  <div class="flc-top-login">

    <span class="flc-top-login-text">Welcome&nbsp;

      <strong>{if $userinfo.firstname || $userinfo.lastname}{$userinfo.firstname} {$userinfo.lastname}{else}{$login}{/if}</strong>

    </span>

  </div>

{/if}

{if $config.General.ajax_add2cart eq 'Y' && $config.General.redirect_to_cart ne 'Y' && $main ne 'cart' && $main ne 'anonymous_checkout' && $main ne 'checkout'}

  {include file="customer/ajax.minicart.tpl" _include_once=1}

{/if}

<script type="text/javascript" src="{$SkinDir}/jquery.tooltip.min.js"></script>

<div class="menu-dialog menu-minicart">

  <div class="title-bar valign-middle">

 <h2 style="padding-left:20px;">{$lng.lbl_your_cart}</h2>

  </div>

  <div class="mini-cart-content">

 {include file="customer/minicart_total.tpl"}

  </div>

  <div style="position:absolute;top:125px;">

 <a href="cart.php" class="cart-buttons"><img src="{$ImagesDir}/view_cart.png" width="121" height="39" alt="View Cart" /></a>

 <a href="cart.php?mode=checkout" class="cart-buttons"><img src="{$ImagesDir}/checkout.png" width="112" height="39" alt="Checkout" /></a>

  </div>

</div>

Any help would be much appreciated.
Thanks,
Brett