Yes, it happens to me too, all of a sudden. Nothing has been changed on my computer setting. The pictures are now just the little boxes with the X, and the statement "click to view large image". I have to right click & choose "Show image" before the image would appear. Right now I am waiting for the pictures of the post "4th. and last Harley quilt" to show up, but none has, it has been more than 4 minutes.
Finally one just appeared, after I clicked the refresh button. I just checked, another one showed up, that's a total of 2, in the last 10 minutes.