The MSRC folks say that they have revised the installation packages for MS10-015 with new logic that prevents the security update from being installed on systems if certain abnormal conditions exist. Such conditions could be the result of an infection with a computer virus such as the Alureon rootkit. If these conditions are detected, the update will not be installed and the result will be a standard Windows Update error.
They also state that they have also released a Microsoft Fix It as a standalone scanning tool that reports on the compatibility of a system with the MS10-015 update. The scanning tool can also be deployed through enterprise deployment systems allowing administrators to detect compatibility with the update before deploying broadly.
J.C. Hornbeck | System Center Knowledge Engineer