NIS2011 two ccsvchst.exe processes - is it normal?

There are two ccsvchst.exe processes running on my PC. If I go to the NIS Performance Page and click on one of the orange peaks it lists two ccsvchst.exe processes and the percentage for each one.   Is this normal or should there only be one of them?  I have NIS 2011 and Windows 7 Home Premium 64bit.