It seems that many people are confused by having 2 different image history pages
- one for history of uploads (on image's page), and other for changes in image's
description (on image's history page). Why it follows the way it's actually
implemented, it's very unintuitive, and gets a lot of people confused. The
automatic description change on upload makes the confusion even worse (both
histories shows 1 entry on typical images, so people may reasonably think they
show the same thing).
The solution is of course to display history of both uploads and description
changes in the image's history.