Windows Update High CPU use KB947801 resolved

[Guest SageAdvice]

On two of my client's PCs installing the Office 2007 converter caused the

update service to deliver KB947801 (Office 2007 patch but applies to ofther

version of office too) on the next boot. The next boot after that Windows

Updates kicks in and uses 50+% continuously making the system very

unresponsive. Turning off Automatic updates stops this on next boot but

turning it back on immediately resumes the problem. There is no Internet

activity associated with thsi and intermittany hard disk activity. Process

Explorer shows svchost running for the Windows Update service. I resolved

this by installing KB927891 hotfix and then re-installed Windows Update 3.0

but if a manual update is attempted the same problem arises. I resolved this

by Deleting contents of %windir%\SoftwareDistribution,

%windir%\System32\CatRoot and %windir%\System32\CatRoot2 in Safe Mode