Norton Internet Security BF plugin crashes everyday on Firefox using an iMac. Any helpful ideas?

Norton Internet Security BF plugin crashes everyday on Firefox using an iMac.  Any helpful ideas?  It only happens on my homepage (ighome).

<script id="ncoEventScript" type="text/javascript">// function DOMContentLoaded(browserID, tabId, isTop, url) { var object = document.getElementById("cosymantecnisbfw"); if(null != object) { object.DOMContentLoaded(browserID, tabId, isTop, url);} }; function Nav(BrowserID, TabID, isTop, isBool, url) { var object = document.getElementById("cosymantecnisbfw"); if(null != object) object.Nav(BrowserID, TabID, isTop, isBool, url); }; function NavigateComplete(BrowserID, TabID, isTop, url) { var object = document.getElementById("cosymantecnisbfw"); if(null != object) object.NavigateComplete(BrowserID, TabID, isTop, url); } function Submit(browserID, tabID, target, url) { var object = document.getElementById("cosymantecnisbfw"); if(null != object) object.Submit(browserID, tabID, target, url); }; // </script>