Found the video via this:
http://arstechnica.c...-at-stability.ars
Mac OS X has never been the preferred platform for gamers, despite its support for the OpenGL 3D graphics framework. Part of the issue is that graphics hardware drivers for Mac OS X just aren't as well optimized as they are on Windows.
...
Also, said Newell, "what's sort of surprising is how much more stable our games are on the Mac." Looking at the early data available from the Steam client, "the Mac is five times more stable than Windows" when using the metric of minutes played versus number of crashes.
Hmm - looks like the Indie Game Pack is gone, I'll have to pick up Osmos stand-alone.