Following up on my previous post, I'm having more problems with Snow Leopard. Here's the story.... I created a slideshow (for DrupalCon Paris 2009) that was to autoplay on a hi-def monitor. Aside from crashing issues I mentioned before, I was able to create the slideshow and export it to an autoplaying Quicktime movie. Only the Mac's own Quicktime 10 would not play it past 4 seconds. So I installed the optional Quicktime 7. It was able to play the video for about 25 seconds or so, and then stop. In both cases, if I set the video to loop, it would loop only the few seconds that it would play. The same file on a Windows machine had no problems. So Quicktime on Snow Leopard has issues, at least with the files that Keynote on Snow Leopard generates. Joys on the bleeding edge.