I HATE FLASH - it never provides information that can't be done textually. It is eye candy and luckily you have a short movie. Otherwise I would not have waited. Try giving the surfer an option that allows for FLASH or non Flash pages rather than give it to them and hope. You may find that Flash is the culprit. If you have JavaScript try declaring the JavasScript level.
eg
<script type="text/JavaScript" language="JavaScript 1.2">

I have the book - Pure JavaScript and that tells you all the different browsers that any instruction can cope with. Try dumbing down on JavaScript.