That sounds like some kind of odd error rather than a restriction. I've read posts from a few people saying they can no longer post images, but so far, no one seems to have figured out why.
Have you tried a different browser or device to see if the icon appears? Not sure how that would affect past images though.
Can you give us a post to look at that should have an image?
Try sending a message to Laurel and see if she'll reply.