I use norton, you have to go to your settings and choose what you want, usually a popup will occur when the program ACCESSES computer access/internet access.
good luck on catching viruses.... Nod32 or Avast would find it way before norton would, and give you an option to delete it, unlike norton
spyware or virus prob. scan ur computer and if that dosent work use internet exploer and go the fire fox home page and email the support