Sorry - should have said it is Sophos Web control. Don't know why it is even on my PC but every time I open a thread, I get a Website Blocked message saying it is blocking a website that is against our company policy. Were it our usual proxy server, I could look at the logs but I'm not sure how...
My Sophos at work is going mental all the time I have NSC open. Keeps saying it has blocked a site but doesn't say what. Presumably the same issue. And I am logged in.