, SecurityFocus 2006-01-12
For four days in January, network administrators and security-savvy home users had a choice: Download and install an unofficial open-source fix for the critical flaw in the Windows Meta File (WMF) format or wait an estimated week for an official patch from Microsoft.

DSMatthews
If the update profiles your system it can tell you what it has been tested against, then M$ can focus on testing the systems and apps that are used most, then get on to the rest later.
As soon as somthing is signed off as tested the update servers know about it and they can compar...
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