I also had this problem but not on all threads.
So I stopped using IE and changed to Firefox which cured the problem. I am now back to using IE because I deleted part of Firefox by mistake and 'broke it'. Also,Firefox really slows down YT videos and you have to wait whilst they buffer.
Now I'm back to IE for most of my computer browsing and the picture problem has gone away. Sometimes pics on here don't show at all, then I come back using Firefox which I reloaded to my comp' and I can see them. Oh the joy of computers.