Edit: WSUS Offline Scan Catalog Fails to Sync on ConfigMgr 2007

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:

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

J.C. Hornbeck | Manageability Knowledge Engineer