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Old May 21st 08, 02:47 PM posted to microsoft.public.windows.vista.performance_maintenance
Russell Jesson[_2_]
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Default svchost 100% CPU and Possible windows update problems

I just swapped from AVG7.5 to 8.0 and problem is still there However making
some progress as if I look at the Process explorer properties for svchost the
thread it reports is ntdll.dll!RtlUserThreadStart and suspending this makes
the machine usable. So I’ve been trying various things to no effect to help
the problem.

The AVG8 scan finds nothing.

Currently uninstalling Windows Live xxxx as there are reports, all be it old
ones, that this can cause problems and I’m also in the process of getting the
flashplayer update as this was also mentioned.

However even with the CPU down very low (with thread suspended) the Windows
Installer crawls along, well uninstalling in this case.
I’ll keep looking and report back on findings.


"Stephen Caudill" wrote:

For what it's worth, I had the same problem about a month ago. It was
svchost.exe that was spiking the CPU. Did some trial and error with
services and couldn't nail it down. It lasted about 2 weeks
(intermittently) and has now not reared its ugly head for a couple of
weeks now.

I think I read somewhere that it was a conflict with the virus app? I'm
using eTrust. Not sure, but possibly an update fixed it? Good luck!
-scaudill



Russell Jesson wrote:
Vista Basic Machine started running very slowly and when I looked in Task
Manager svchost.exe was using a 100% CPU. Using system internals process
explorer it’s the network service containing crytsvc, dnscach, KtmRm, NlaSvc,
Tapisrv and Termservice.

Looking inside the thread that is using the CPU is ntdll.dll

I’ve ran all virus and spyware checkers I can and all show no problems. I’ve
booted in safe mode and cleared all the softwaredistribution folder. The slow
running does not affect safe mode but as the service is not started no great
surprise. Windows Update doesn't work in safe mode either, thanks Microsoft.

I tried to update AVG virus checker but it wanted KB929547 applied so I
downloaded it and tried to run but after several hours all I got was install
failed with 0x800706bb

Any ideas??