Thumbs missing in Firefox

It looks like someone hacked some of the image boards in 4chan so that you can't see the image thumbnails in Firefox.  This includes Ecchi, Yuri, Hentai/Alternative and High Resolution.  Whether it's a hack or not, could you please fix it as soon as possible?  Thank you.

it's a problem with adblock.
i can't find what it is though.
i think adblock is blocking part of the boards to fuck up.

I dont have ad-block and they are missing in my browser too.