OK, so I just registered. Here's the thing... I had problems with Facebook for 1-2 months now, where the gifs and other default images don't show at all in that page. User uploaded photos appear there (my profile pic, other pics from pages, etc), but not these images that are default for everybody on Facebook. Other pages work fine.
I have this problem on Firefox (40, 41, 41.0.1), Chrome (44, 45), on Windows 8.1/10 64bit. I have Avast Free and Comodo Free Firewall. First thing I tried turning off Comodo, but there's no problem. The Web Shield module on Avast is the single problem. Then I tried to insert
www.facebook.com in Exclude in Avast, it doesn't work, the page still has blocked images. I don't know what to do with this AV software now, because I'm using it for years now, it worked great, but now that's just too much.
Lots of people have this problem, on multiple versions of OS/browsers, on multiple pages, the only constant is Avast (Free). In my case this happens on all PCs, one with everything just installed, so fresh and up-to-date from the beginning.
We need a fix ASAP. There are weeks, months already. Turning off Web Shield module makes the AV almost useless for many, since almost everything is done online these days.