WSUS svchost/msi issue

With WSUS V2 some client face a great problem due to svchost.exe pegging the cpu of workstations, rendering the computer nearly unresponsive for minutes at a time.

If this problem occurs on your system you have to Combine the installation of the new client of WSUS V3 , with the latest MSI fix available in KB927891 available on Microsoft Download Center, Microsoft completely address the what we have fondly called the svchost/msi issue.

It’s important to keep in mind that the new client is only a partial solution and clients must have both KB927891 and the new 3.0 client installed for a full solution.
http://support.microsoft.com/default.aspx/kb/927891