SWF not showing in IE without clearing cache and reloading

Help please, I’m going crazy Googling for days trying to solve this problem…

I’m trying to use Server Side Includes so that a menu bar doesn’t have to be repeated for every page I build. This works fine in Firefox and Chrome but not in IE as, once a link has been selected, the page shows without the menu contents. To get it to display properley the cache needs to be deleted and the page reloaded.

I’ve recreated the problem here --> http://www.rogw.net/angus/navbar.shtml showing my SSI call from the Home and other pages together with the code the SSI calls.

Apologies that the menu is in Swedish, it’s for my nephew who lives there.

My thanks for taking a look at this. All contributions gratefully received.
Rog