IE 7 does not work with Exchange 2007 rollup 4

We have been running Exchange 2007 since about March. There are three exchange servers in the organisation two are 2007 and there is a 2003 exchange server for public folders only. All has been working "reasonably" well. OWA has been used by a number of people in the organisation. In order to take care of a few problems rollup 4 was applied to the 2007 Exchange servers. However since that time users using Internet Explorer 6 or 7 have not been able to connect to OWA (firefox works fine). The issue surfaces both on Vista and XP machines (Firefox works on the XP machines I have not tried it on Vista yet). Internet Explorer users get the following error...
Line: 7
Char: 1
Error: Syntax error
Code: 0
URL: http://servername/owa/auth//logon.aspx?

The Source code view:
<!-- Copyright (c) 2006 Microsoft Corporation.  All rights reserved. -->
<!-- OwaPage = ASP.auth_logon_aspx -->

<!-- {57A118C6-2DA9-419d-BE9A-F92B0F9A418B} -->

<link type="text/css" rel="stylesheet" href="/owa/8.0.744.0/themes/base/logon.css">
<link type="text/css" rel="stylesheet" href="/owa/8.0.744.0/themes/base/owafont.css">
<script type="text/javascript" src="/owa/8.0.744.0/scripts/premium/flogon.js"></script>
<script type="text/javascript">
      var a_fRC = 0;
      var a_sUrl = "&";
      var a_sCW = "http:\/\/\/owa\/?ae=Dialog&t=CloseWindow";
      var a_sLgn = "logon.aspx?replaceCurrent=1";
<body class="owaLgnBdy">
      <div id="dvErr">
            <table cellpadding="0" cellspacing="0">
                  <td><img src="/owa/8.0.744.0/themes/base/error.gif"></td>
                  <td style="width:100%">To use Microsoft Outlook Web access, browser settings must allow scripts to run. For information about how to allow scripts, consult the Help for your browser. If your browser does not support scripts, you can download <a href="">Microsoft Internet Explorer</a> for access to Outlook Web Access.</td>

I need to get this fixed asap... If anyone has a sloution aside from installing Firefox on all the users PC's I'd really appreciate hearing from you. One possibly I do not want to contemplate is removing rollup 4 off the exchange servers...
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Marc ZCommented:
Since no one elkse has offered anything yet, two thoughts that popped up when I read this is,

Did you try adding the server to IE's list of Trusted Sites?

If you can log in to owa, can you update the s-mime control? log in, click Option's, scroll down to Security and Install the latest s/mime control.
damccallAuthor Commented:
Thank you  mtz1of4,

Yes I have imported the certificate to the local PC and I have added it to the trusted sites for IE. Unfortunately this does not help.

I cannot even get the logon prompt within IE so I cannot test your second solution.

I would have called this a straight IE bug except the only thing that has changed is the Exchange rollup4 IE was working before with the same patches that are currently installed... The puzzler is why does Firefox work fine?...  
Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

Marc ZCommented:
Sorry, those were the only two things I can suggest. Perhaps one of the real Experts in this field will be by soon.

damccallAuthor Commented:
Thanks for your input, one of the team here found the problem. The rollup 4 changed the permissions on the exchange IIS folder so that it requires domain authentication before you get the logon screen template. So if you use OWA internaly it works fine but if you attempt to logon external to the domain IE stops with the error Fire fox is oblivious to the error and still gets the logon box without the template. So the permissions to the template require anonymous access and it all works again... Maybe it will be fixed in the next patch... We can but hope..
Marc ZCommented:
Thanks for the info.  See this faq on how to get your points returned.
anyone got solution for this problem?
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