Good site returning 404 error

The problem was Comodo service had to be allowed for me to get to web pages.

The result of the Cean Startup process was that Ad Muncher is the culprit. Which is strange, because I've never seen it actually block pages and return a 404 error without any indication that it did so, and because disabling it after startup didn't fix the problem. In any case, I've emailed the developer, who is quick to get on these things. Thanks for your help,

Update: Ad Muncher responded that they are sending a valid HTTP/1.0 request, but the website is incorrectly configured (unfortunately, it doesn't show a contact address). Which raises the question, how is an extension like AdBlocker (Opera) opening the links ok? Beyond my knowledge.

Well, I'm glad you figured it out. Does AdBlocker allow you to add the site to it's exceptions perhaps? So the site bypasses AdBlocker. A Guy

Sorry, I meant Ad Muncher. A Guy