Page code appearing on login screen

On the login screen, above the yellow bars asking folks to join the forum and below the header menu, appears the following text centered on its own line:

/* */ /* */

I believe these are supposed to be script comment tags that have fallen outside script tags after changes were made. Should be easy enough to remove from the page source.

<!-- BEGIN JS TAG - Excelforum_728x90 < - DO NOT MODIFY -->
<script type="text/javascript"><!--
google_ad_client = "pub-8275723683113357";
/* Excel 728x90 */
google_ad_slot = "5878727913";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
<!-- END TAG -->

/*  */
/*  */ 

</div>