svchost.exe (netsvcs) draining all my memory

in this case the svchost is waiting on another application and it is stuck in a vicious cycle and that is why you getting high cpu usage (50%) for dual core. i have found if you download all updates at once without restarting, certain updates will pend for their recent updates. this can also happen if you have a third party system care software as it will search for security patches for windows 7 while windows update does the same thing... so if thats the case, make sure that you are 100% updates in windows update and nothing is pending in any third party software.

note if this is like you and you click the windows update and nothing is downloading, check the shutdown button to see if there a install that needs to be finished

in addition, i have found that a update that says it was installed actually was not installed properly, you must find the misplaced update delete it, restart the computer to see if it will automatically install the update in the appropriate place and if not run update again. look in local disk c: first to see is the misplaced file are there, the files will look like a bunch of number and letters mixed, there should only be 3 files like that any more there it is misplaced files. ahh and get rid of any .temp files