I have a Mac. Run Firefox 18.0.1. About half of the websites that I visit (including https://safeweb.norton.com/) get website blocked for phishing. Appears to be websites that have Fackbook like somewhere on the page. I have run LiveUpdate several times. I have tried to disable phishing in Norton Confidential. I have tried to disable web blocking on the Firefox preferences. Nothing seems to work. I can go to these websites on Safari without a problem. What do I need to do to rectify this problem?