Whirring for 10 minutes. A bug. There's now an official patch for it, but it didn't work for me. Find KB article regarding 100% utilization.
It's not downloading. I watched it with ProcessMonitor. It's reading every freaking file that the updates pushed into your computer. It takes 7-9 minutes. It does not happen if Automatic updates are ON. Hmmm, it did to you? It does happen with Download, don't install and Notify only settings. So Turning updates ON, or completely off is the answer. But you must not forget to do the updates manually!
Open Control Panel, Admin tools, Services. Find service Automatic updates and stop it. Next after it is BITS (Background interlligent something), turn that off as well. And of course, tell the Windows Update dialog to not do Automatic updates, perhaps that should be done first, I don't remember. Finally, on the day you want to update, reverse the process.
Oh, and as Animal says, anti-malware stuff does have to go out for definitions, so a reasonable time 30sec?? is totally acceptable. 10 minutes is not.Edited:
I found the reference to svchost 100% utilization: KB927891. The patch is no longer restricted. You don't have to call and beg.
Edited by tos226, 23 March 2007 - 08:12 PM.