Occasionally over the last few months, I'd open a thread and get this login window show up. I've never had a .mac account or anything like it, and I'm not entirely sure why it's coming up. I think it's due to some sort of advert, but it might not be. Any ideas if it's something to do with the site's advertisements, or something on my end? Oh and if this is in the wrong part of the forums, apologies but I felt this was the most appropriate place for it.