Remember how there used to be so many annoying pop-up adds until pop-up blockers became popular. Well, the advertisng guys have come up with a new way to deliver pop-ups. They send them in on a port other than port 80. Lately, I have seen them on ports 82 and 90, and I expect it to get worse in the future. If you are getting a lot of pop-ups with a browser that should not be getting them, it is time to check your firewall rules.