Update delay

Update delay

Please see 2 attached screen shots, both from 02.15.2011.  The built-in Windows Update shows 4 important updates available, but the ManageEngine scan does not show these updates in the database, even though they are 7 days old!  What accounts for this delay?  I would assume and expect that all vendor updates are released into the VulDB within 24 hours of release by the vendor.  Is this not true?

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