Worm Exploits MS08-067 Bug DOWNAD, also known as the Conficker worm, was first seen in the wild taking advantage of the MS08-067 vulnerability. True to form, it propagated via shared networks. Like its predecesors-the Sasser and Nimda worms-it also raised security concerns with regard to a spike in port 445 activity

If I am correct you are referring to this: http://www.microsoft.com/downloadS/details.aspx?FamilyID=b93356b1-ba43-480f-983d-eb19368f9047&displaylang=en
You could try downloading the update off of Microsoft update directly instead of WSUS. sasser — …