Actually it looks like the issue Cecilia posted on is different.  Sorry about the confusion.  You'll probably want to check it out anyway if you're seeing any client/server synchronization issues in your WSUS environment:

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Just a quick heads up that it looks like Cecilia Cole from the WSUS product team posted some more information about a sync issue over on her blog.  If you ran into this problem then you'll definitely want to check this out:

http://blogs.technet.com/wsus/archive/2008/06/18/client-server-synchronization-issues.aspx

J.C. Hornbeck | Manageability Knowledge Engineer