This morning I awoke to find M$ has offered - I accepted - KB2286198 - Official Security for Windows 7 SP1 -
Security Update for Windows 7 Service Pack 1 Beta (KB2286198)
Installation date: 8/3/2010 9:05 AM
Installation status: Successful
Update type: Important
A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it. You can help protect your system by installing this update from Microsoft. After you install this update, you may have to restart your system.
More information:
http://go.microsoft.com/fwlink/?LinkID=197393
Help and Support:
http://support.microsoft.com