I see people have had this problem before. When you enter a wrong URL in your browser, or perform some other DNS request that fails, you get the stupid BT Web Address Help page. It says you can turn it off in the BT Web Address Preferences. I've done that but I still can't get my invalid DNS requests, or wrong web addresses to fail correctly.
Surely, this is nuts. Anything that performs a DNS request needs to know whether it has genuinely failed or not.
How do I get this disabled preference to act like it's disabled?