I downloaded a WU about two weeks ago and it is just ticking by.  I have no idea why is  using so little system resources.  I haven't changed any of the settings and usually when a WU is running the CPU usage is 100%. With this WU it is barely 10%.  I'm loath to run this machine now seeing as I'm wasting so much power getting so little done.  The estimated time is 80 hours.  Usually it is 20.

Does anyone know what is going on with this unit???