I configured NME-IPS-K9 with Cisco Router 2811 and I use IDM to access to IPS then, I saw the graph on Dashboard for CPU, Memory, & Load graph show CUP usage: CPU1 used 2% and CPU2 used 100%. I wonder why it shows two CPU? what is CPU1 belong to? what is CPU2 belong to? why CPU2 used 100% never decrease to lower percetage?. please help me to clarify about these ponts.