Unwanted Norton Utilities can not be cleaned out of system.

I updated a large list of applications today. Among them one added Norton Utilities to my list. After it installed I decided to uninstall it and did so. However, every so often it pops up asking to be installed. I have searched through my hard drive and windows and removed every vestige I could find. But it still manages to pop up. Is there a norton tool that can clean up and remove a bad installation?