The hotfix to correct this problem has been publicly released and is now available online.

Microsoft Security Advisory (954474): System Center Configuration Manager 2007 Blocked from Deploying Security Updates:

http://www.microsoft.com/technet/security/advisory/954474.mspx

The Knowledge Base article is here: KB 954474.   Be aware that you don't have to call us for the hotfix - the KB article links to the download center where you can download the update directly. 

Enjoy!

J.C. Hornbeck | Manageability Knowledge Engineer