Most of the time as an evangelist I report on good stuff.  You know, product updates, kewl technology, etc.  Thankfully I don't have to report on bad stuff very often but I would be remiss if I didn't point my readers to the post by the WSUS team at http://blogs.technet.com/wsus/archive/2007/10/25/wds-update-revision-follow-up.aspx

Hopefully you weren't negatively impacted.  I'm sure update scopes are being looked at very carefully as a result of this.