Multiple instances of ccSvcHst.exe running; more than I'm used to, that is

Hello everyone,

 

I've been using Norton 360 for about 2 years with no problems. However, after installing the latest update my computer has been rather slower than usual. When I was looking up the processes tab in my task manager there were four versions of ccSvcHst.exe running, two for user, two for system (it used to be just 1 and 1). Is this normal? If not, how do I fix it.

 

btw, I am using Windows 7-64 bit as my OS.