ccsvchost.exe on NIS 2011 taking over

I'm having a problem with ccsvchost.exe taking over most of the PC's CPU resources. This is a fairly new issue, it's only happened the last week or two. I have confirmed that NIS 2011 is on the latest updates.   Typically, it's taking 75-95% of the CPU. This is keeping other important programs such as Carbonite from running expeditiously and thus my backups have fallen behind.  I can't kill the process. How can I resolve this?