Lunakiri said:
The virus warning/whatever could be because of how the pages are created. If I recall correctly, Vann once told me that they are dynamic in the sense of how there are no actual offical Pages for the posts. They are all just created on the fly, or something. I can't remember, but I wasn't paying much attention at the time XD
The pages are actually created by calling a bunch of separate functions to slap a temporary page together on the fly, yes. This is done so that you don't need yet another .html page for each forum post, user profile, image post, etc.
It's not impossible for it to be causing false positives with antivirus software, but it's pretty standard practice for gallery sites. Gelbooru works similarly, for example. I'd imagine deviantart does, too. So, all in all, it's not entirely likely, but not out of the question.
More than likely it's just an ad or script on our site somewhere being seen as a problem for whatever reason.