Since a version upgrade a while back, my multisite installation is putting the wrong (long, non-htaccess) path in the 'Link URL' field in the 'Add Media' screen.
It used to (as it should) give a path like this to go in the post:
but is giving this instead:
This happens whether I used the single file uploader or the multi-file uploader - both being the standard WordPress items.
The file is served fine from with either URL - so my htaccess is fine.
It is just that I don't want the long (and wrong) URL in all of my posts.