On October 10, 2011 Microsoft released Service Pack 2 for Microsoft Forefront Threat Management Gateway (TMG). It’s anywhere between 17 and 21 MB.
http://www.microsoft.com/download/en/details.aspx?id=27603
Overview
The service pack includes the following new functionality and feature improvements:
New Reports
• The new Site Activity report displays a report showing the data transfer between users and specific websites for any user.
Error Pages
• A new look and feel has been created for error pages.
• Error pages can be more easily customized and can include embedded objects.
Kerberos Authentication
• You can now use Kerberos authentication when you deploy an array using network load balancing (NLB).