I just uploaded the picture seen here, and almost immediately decided to make a change to the image. I edited the image, saved it with a different filename, and uploaded it. It said image uploaded successfully, but the old image is still there.
I deleted the old image, and tried to upload the new one again. Once again, the old image is still there!
I know the new image is ok, because I'm using it as my avatar on BGG, and Google groups. The new version shows up there. Why not here?
(I'm attaching the new version)
Oooh, it has been mysteriously fixed! Thank you, invisible hand!