Works fine from the Netherlands as well...
It's a PDF file which is not handled by your browser itself but by a plug-in, usually from Adobe. Perhaps caching works differently for that plugin. Have you tried shift-click on the link (this prevents the cached copy from being used) or doing "reload" or "shift-reload"?
Is there maybe a proxy in between you and the server (check internet settings)? Doing a shift-reload should force the proxy to invalidate/update its cache.