Forefront TMG and Forefront UAG still need Windows Server 2008 installations. My WSUS servers keeps reporting update KB972493 for all Windows Server 2008 installations on a consistent basis. Which is incorrect, since these machines are not running WSUS or anything at all. There are clean retail installations, so the mistake must be in the update detection logic.
I found that Jeremy Jameson has the same issue also and created an computer group for the servers and then declined the update for that computer group.