I didn’t know whether to post this in this or the client side forum, but hell.
Anyway, what I did was make a simple flash animation (it’s here http://blippo.addr.com/misc/testpr.html , it’s just a preloader thingy) and in the publish settings under HTML I set the size to 100%/100% and set it to no scale. It works fine in Opera and IE (displays it in full, doesn’t scale it and it centers it) but in Firefox it displays only the bottom of it in the top part of the page. I went throught the HTML source and it seems OK.
MAN I HATE FIREFOX! DIE FIREFOX DIE!