Problem: SVCHOST.EXE uses 60-100% cpu at bootup or when Microsoft
Update is running.

CAUSE: Bug in Microsoft Update (Microsoft Update scans all Microsoft
software including office/
Windows update only scans Windows for updates)

FIX:
go to windows update and check if the "get microsoft update today"
banner is there, if it is then this is not your problem, if it's not,
click on 'change settings' on the left, in the next window scroll down
and un-tick microsoft update and click on 'apply changes now' , you'll
now be back to windows update only.

There is a hotfix available from Microsoft for the symptoms you are
describing.

FIX: When you run Windows Update to scan for updates that use Windows
Installer, including Office updates, CPU utilization may reach 100 percent
for prolonged periods
http://support.microsoft.com/?kbid=916089

--
William Crawford
MS-MVP Windows Shell/User

"Piet Slaghekke" <p.slaghekke******.com> wrote in message
news:1162974634.563348.11690@b28g2000cwb.googlegro ups.com...
> Problem: SVCHOST.EXE uses 60-100% cpu at bootup or when Microsoft
> Update is running.
>
> CAUSE: Bug in Microsoft Update (Microsoft Update scans all Microsoft
> software including office/
> Windows update only scans Windows for updates)
>
> FIX:
> go to windows update and check if the "get microsoft update today"
> banner is there, if it is then this is not your problem, if it's not,
> click on 'change settings' on the left, in the next window scroll down
> and un-tick microsoft update and click on 'apply changes now' , you'll
> now be back to windows update only.
>

WTC (remove) wrote:
> There is a hotfix available from Microsoft for the symptoms you are
> describing.
>
> FIX: When you run Windows Update to scan for updates that use Windows
> Installer, including Office updates, CPU utilization may reach 100 percent
> for prolonged periods
> http://support.microsoft.com/?kbid=916089
>
> --
> William Crawford
> MS-MVP Windows Shell/User
>

I tried the above fix but it didn't fix my problem. Still get 100% cpu
usage with SVCHost when updating XP and Office