Flash redraw problem?

Hi Folks,

Hi am struggling with the weirdest issue for a while now. In a new flash site for my design agency, I programmed a row with interactive thumbnails.

The problems is that these thumbnails slowly disappear over time. Sometimes partly, sometimes completely. If you show the redraw regions in the flash player, you see that there’s lots of activity where the thumbnails disappear.

I have reviewed my code several times now, but can’t explain this behaviour.

Is there anyone who knows what this might be? I am guessing in the direction of hardware / player quircks as the behaviour is not consistent on different machines.

Feel free to take a preview at the site itself.

Cheers, Bart

screenshot with redraw regions turned on: