NIS using 13% of the CPU all the time

I've just started having a problem with NIS 2012.  As of a week ago or so it has started using 13% of the CPU all the time.  Even when my computer is idle it uses 13% of the CPU.  The process doing this is ccsvchst.exe.  On the CPU graph under performance, there is a constant yellow band across the whole window at 13%.  This just started happening, I had gone for about 3 months since installing NIS and it never happened before.

 

Any ideas?  Is this a problem with a recent update that was installed as part of the Live Update process?

 

Anyone else seeing this problem?

 

Thanks,

 

Bill