Hello!
Have you seen this problem - if System Restore is used after it is done Norton 2011 gets corrupted - becomes with red X and pops-up and error about Auto-Protect . Fix now button doesn't fix it nor the recommended silution to run Live update . and the only solution that works is to reinstall the application.
I am seeting this very often on various computers - today it was on Windows 7 Ultimate x32
Norton is Internet Security 18.1.0.37