Today we are announcing the availability of an update that does not address a security vulnerability, but is a high priority for customers in keeping their systems updated...
Your system may appear to become unresponsive when Windows Update or Microsoft Update is scanning for updates that use Windows Installer.
You receive an access violation error in svchost.exe. This access violation stops the Server service and the Workstation service.
A memory leak occurs when Windows Update or Microsoft Update is scanning for updates that use Windows Installer.