Flow plugin not working on particular computer

Hi

I installed the flow plugin to an embedded JW Player and everything worked fine. The installation can be seen here: http://www.birdieball.com.au/Watch-Videos

Somewhere in the last few days, only when using my laptop, all I see when I visit the page is a black rectangle of the player along with the text title of the video in the playlist that has the focus. If I click the play button then the video with the focus starts playing but even if I stop it I still can't see the images of the other videos. I'm running 64bit windows and have tried it in ie9 and firefox9. The result is the same for both.

I have tried four other computers but the installation works correctly on all of them.

On my laptop I've uninstalled flash player, reinstalled flash player, disabled hardware acceleration. I've restored the laptop to a point in time when I know it was working but still no luck.

Has anyone an idea?