I have been having this issue for awhile and now people are getting annoyed with it :)
In my movie, under a certain marker I have a flash object playing that takes up the entire screen (800x600). When I play my movie on the kiosk, you see 2 member objects (which are not part of that frame) flicker in the top left corner of the screen, one layered on top of the other with their regpoint centered at 0,0 (movie runs at 5fps, so I think the flicker coincides with that). In authoring mode, I do not see the flicker, but if I stop the movie on that marker the 2 objects appear. They are not touchable. When I move the flash object they disappear. My movie does move around in the Z-axis of other windows on screen (goes back and forth to show another window unrelated to my director movie). I read somewhere online this may have something to do with it, but I have no idea.
Anyone ever see this before and know any kind of fix? Thanks.