WP 3.3.2 is not letting me set a Link URL on an image.
I uploaded the image in the normal way by clicking Upload/Insert , so it exists as a Media item and is also attached to the post.
Then, still in Edit Post I click on the image then click on the painting icon to get into the Edit Image page. I put a URL in the Link URL field and click Update. The URL is of a PDF on the same domain but it's not a WordPress item.
Then if I go back to the Edit Image page again, my URL has disappeared. Saving the post doesn't make any difference.