For about a month now, however, the image cache that preserves the unedited versions refuses to clear. It's nothing on my side, as far as I can tell. I have cleared my browser's image caches multiple times; I've also tried to refresh the images, but to no avail. In some cases, I can see that an image has been edited when I click on it and look at the larger version, in others it looks unchanged. Thumbnails also don't refresh.