Norton Insight not running properly......(anymore)

For some reason lately my Norton Internet Security 2009 keeps eating up CPU resources when the “Performing Background Tasks” runs. It also will not turn off when I am back using the computer like it used to. I believe the culprit seems to be Norton Insight. When I try to run it by itself it will say its scanning files but all its doing is freezing and starts eating 25% of my system resources. Then after a while 50%. This is on a quad core machine with 8GB of RAM. Any ideas?