Sophos AV had to be installed on an SBS 2008 server. this particular server had never been patched before. Before i could install sophos, i had to patch the server.
I got the server up to Server 2008 SP2 and installed WSUS 3.0 SP2. All of a sudden, Windows updates displayed a mesage
Windows cannot currently check for updates, because the service is not running.
It turned out that the server had a myraid of malware and virsues. Removal of these viruses and the contents of c:\windows\softwaredistribution hasn't fixed the issue.