the problem sounds like your pages are not yet loaded, and once you have loaded them then they are stored in your cache and this problem does not happen any more. note, IE does NOT cache locally run files, so this will happen every time you test the site. if you test online, however, it will probably only happen once and then be fine for a while. what you need to do is add some sort of a preloader to the menu buttons that will show some progress bar, so that when users load your page for the first time and push the button, they will get some message, aka "working..." or a progress bar(which would be harder). if you are decent at AS, try to add a progress bar. otherwise, just make a text box
on (release) {
some_instance_name.text = "Loading...";
}
ps. i think FF does cache local files, i dont remember exactly
pps. IE = Internet Explorer, FF = Firefox