I installed Symantec Antivirus client on my ISA Server 2006. I installed it as a managed client. I used the steps explained in Steve's web site. I even downloaded the Symantec protocols from the site and followed the instructions. The symantec client on the ISA Server 2006 was able to get the definition files from my symantec main server. Now, all of a sudden, it's not getting the virus definition updates any more. Any reason? Thanks, T