Oops -- just saw another weird effect.
[a] I'm trying to use the WordPress media "gallery" function with images. I uploaded 25 pics and made a small gallery on one page.
[b] I much later inserted a WordPress logo into the top of a page, only to find it comes out with a border around it that I can't get rid of...
[c] And now I've just noticed that the little logo was ALSO automatically added to my media gallery! WTF! Q.: Does this mean there is only ONE galley possible, containing ALL media... because I wanted to make separate galleries for each kind of template.... Don't tell me I'm gonna have to stop using the media gallery, and go back to setting up thumbnail post-pages one at a time by hand! ???