Does anybody know where the Mozilla "Throbber" files are kept? I want to change it, that dinosaur/"m" logo that moves is just strange. Maybe I can do a transplant from the Netscape throbber to the Mozilla one?
O'Reilly ran an article a while back that had a sampling of all the customizations you can do in Mozilla's user.css pref file.
The part about potentially being able to pull a throbber from a remote URL (i.e a "throbber server") sounds super-kewl: wonder if anyone ever set one up.
I think that article may be out of date due to how fast that kind of stuff has changed in the beta stages of Mozilla. It should be in the theme files which are in the .app package contents.