Dec 18, '09 07:30:01AM • Contributed by: n8gray
After quite a bit of hunting and head scratching, I finally figured out what was going on. I'd been working on the website for my iPhone game (HexaLex), and I'd opened the Convertbot website in a Safari tab as a source of inspiration.
The Convertbot site has an embedded QuickTime movie demonstrating their user interface. It turns out that this QuickTime movie was preventing the display from sleeping, even though it wasn't in the frontmost tab. Closing that tab solved the problem.
So if your Mac's display isn't sleeping, be sure to check your browser tabs for embedded movies!
