I'm a longtime non-supporting member who runs FF, with AB+ and ghostery both disabled here. Most of the time I get the ads, but maybe one time out of every six I get a notice that I have adblocking software when I enter the forum page, and of course no ads anywhere in the subforums. Since I get the ads most of the time I don't feel bad about it, but consider it strange that it does this, and has for some time.