Latest versions of Antigen /Forefront Security Server productshttp://blogs.technet.com/fssnerds/archive/2009/04/10/latest-versions-of-antigen-forefront-security-server-products.aspxHere are the latest versions as of today (28 th of October 2009) of Antigen and Forefront Server Security products with relevant kb articles. Latest versions are always the “recommended ones”, support specialists may ask you to upgrade your system toen-USCommunityServer 2.1 SP1 (Build: 61025.2)