About a month ago (in October 2015), ImageShack suffered some kind of major crash. ImageShack is where the uploaded photos were sent, using the tool to the right of the editing area.
Although it never explained what happened, I notice that a number of photos are missing.
I'm sorry this happened, and you only know that they are missing when you open a post, and there is a broken image icon where the photo should be.
This is another reason to bring all of the photos "in house" with the new server package.
It also was around this time that the image upload tool stopped working. I don't know that one is related to the other, but I'm not going to use ImageShack for anything site related anymore. I just don't trust it.
If you see one of your posts, feel free to re-upload the photo, using the "attachment" tool below. Be sure to erase that earlier [IMG] code.