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For us, the issue was a problem mainly on computers that are a little "long-in-the-tooth". If Microsoft Update was installed (which is the embellishment to Windows Update which looks for MS Office updates as well as ones for Windows), one of the instances of svchost.exe that was running would take 100% of the CPU time and the system would be dog-slow. If the system had a "Hyperthreaded" P4, only one CPU instance would be pegged. The Core Duos and Core 2 Duos seem to be fast enough to not even notice one core pegging. The systems would eventually return to normal for us; the amount of time seemed to depend inversely on the speed of the system. Disabling Microsoft Update has been the work-around for us as well. Instructions are here: http://support.microsoft.com/kb/901037/en-us Thomas P. Carter, Ph.D. Department of Chemistry Michigan State University East Lansing, MI 48824-1322 -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Balluff, William Sent: Friday, February 23, 2007 4:31 PM To: [log in to unmask] Subject: Re: [MSUNAG] speaking of Vista...XP problem There is a hotfix out for this now. http://support.microsoft.com/kb/927891/ The Microsoft Knowledge Base article 916089 explains the problem. http://support.microsoft.com/kb/916089/ We have used it on a couple machines with success. The problem is related to Microsoft updates. Before the update, we had to disable Microsoft update and enable Windows update and that fixed the problem. If the hotfix does not fix the problem, disable Microsoft updates by bringing up Microsoft updates, Change settings, scroll to the bottom and check disable Microsoft Update software and let me use Windows Update only. Sometimes you get the problems Peter explained, other times you get Svchost.exe error. -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Peter J Murray Sent: Friday, February 23, 2007 4:08 PM To: [log in to unmask] Subject: speaking of Vista...XP problem While I don't think Vista is the devil (it's actually pretty nice), I am having a vexing XP problem on a couple of workstations. On two of our workstations (both freshly reformatted about two months ago) with XP SP2, I'm having a weird problem where a bunch of services (workstation, windows audio, ICS firewall) will shutdown after about 5 minutes after boot. I can tell this is happening because the themes service will shutdown and restart and then the computer starts acting all weird (so you get a few moments of 'old windows' until themes comes backup). Network activity gets all screwed up and network drives are dismounted after this incident, sound won't work, but most of the services can be restarted with the exception of ICS. No spyware or viruses are on these machines. Any ideas?