Stage.height & width

i have built a site that launches a full screen flash site (no scale) and positions a bunch of mc in relation to the full screen.

everything works fine until you reload the page in IE 6 on the PC. the file forgets what the stage.height and stage.width are and loads the movie to the size of the main.sfw size. this only happens (as far as i can tell on IE on the PC). other browsers and platform work as they should.

any fixes?