There are 4 svchost.exe( LocalServiceAndNoImpersonation) running that are causing network resources to constantly peak. What are these used for and are they need or can be turned off some where?This is a fresh install on a intel qaud core Q6600 system with 4gigs of ram.

dnt tell me if you need it or not

Not a very good answer. LocalServiceAndNoImpersonation kills my pc for 10 to 15 minutes anytime I start or restart. I analyze the wait chain and wmpnetwk.exe is waiting on LocalServiceAndNoImpersonation. Anyone have any idea why it does this and how can it be fixed. Thanx!

here's a starting pointLocalServiceAndNoImpersonation is related to Windows 7 Media Center (networking and extenders).

....and it's probably been turned on (check Windows Media Player) and looking for network extenders. Something along these lines. You can always query the services it is relating (sc qc SrvName)

I have the same issue, after setting up xbox360 as a windows media player extender it seems the WMP service is pulling a steady 25-30mbps of traffic down via the network adaptor. Wouldn't usually be a problem, but the adaptor is actually a tether interface to my android and i'm seeiong a few mb every 10 mins being downloaded by the phone - eating up my data.... this isn't cool. What the hell is it doing?? Rob

I looked for ways to minimize network activity when the computer was idle. The svchost.exe (LocalServiceAndNoImpersonation) appeared to consumer a lot of CPU (35-65%) even when I was not asking the system to do anything. It was also a constant network downloader/uploader. Following the advice of others in this thread, I changed the Windows Media Centre settings. But this did not do much in terms of either CPU or network activity. However, I discovered that it lowered significantly CPU and network activity for the above service when I disabled all the features of Windows Update. So my advice is, check all those update programs that check or listen for new updates in the background. Microsoft appears to be the main culprit in my instance. But perhaps check you WinAmps, iTunes (or Zune), Laptop Vendor etc. Good luck.

I had the same problem, for me at least it turns out to be Nvidia update service, what I did was open "service" in the windows search bar then under "standard" tab look for "Nvidia Update Service" and set it to "disable". Then using process explorer disable the svchost with the localserviceandnoimpersonation, seems to fix it for me. I've come to the conclusion that it's a problem caused by some form of update services.