strange fullscreen problem

hi there, i am having a strange fullscreen problem:
i did a projector for a mac-mini which has to be fullscreen.

when i start the projector-application it goes fullscreen and hides the menubar but the window's titlebar is still visible.

when i start the file as a swf and the flashplayer was previously open, it goes into perfect fullscreen.
if the flashplayer was not previously open it behaves like the projector, and the titlebar is visible again...

any ideas ?

If it's a mac mini I imagine you might have a 3rd party monitor. Have you tried it on a cpu/monitor-in-one mac?

its the same on my macbook and on an imac