I have found a bug that occurs on Linux only (tested on 2 different machines with 2 different Linux distributions, confirmed by another member running on another Linux distribution), Windows doesn't have that problem.
Some member's picture displays as a white square instead of real picture. For ...
@animuson well, SE can upload the pictures to the dedicated imgur host. This way everyone would only have to make sure one single domain is whitelisted to see all profile pictures.
@DarkCygnus it got nothing to do with browser or OS. The block is network level, e.g. blocked by companies who don't want their employees to use Facebook while working, so they just block the whole domain.
@animuson Not sure why you think I have graph.facebook.com blocked. Disabling all addons on Firefox doesn't fix the issue, and typing "ping graph.facebook.com" in a terminal shows that it is not blocked whatsoever.
@ShadowWizard Is there a conclusive test I can do to check whether it is blocked in my networks? Because typing "ping graph.facebook.com" does not give any such clue, it just transmits packets without any packet loss.
Oh, OK. Next step: browse to fbcdn.net and let us know what happens. (that is the actual domain used to host Facebook pictures. Normally, when not blocked, you should be redirected to facebook.com)
A bit saddened this has been marked as non reproducible. Someone in the Physics Stack Exchange in the chat could reproduce it. And as written in my post, I tested on 3 different machines.
I like coniferous smell, the rest is just a random string of characters :)
