OSX 10.7.2 hangs when closing Unity

New to Unity Pro 3.4 on OSX 10.7.2 Core2Duo w/4Gb RAM.

Unity opens AngryBots fine, but OS hangs when quitting Unity. Same has happened on two different workstations. No crash log written, system log only shows a reboot. Any thoughts?

Might be a corrupt download. If you have WGet installed, use that to download Unity, else use Grep.
I’ve had bad experience with downloading Unity through my browser, both on Windows and OS-X I needed a download manager to get it to work.

Go into Terminal and type “grep http://download.unity3d.com/download_unity/unity-3.4.2.dmg”. It won’t show progress (which is why I prefer WGet), but it will probably work.

Thanks for the suggestion, but still having trouble with the tutorial projects. Any other thoughts/suggestions?

I tried the same on a second workstation with the same configuration - Unity still hangs. Could this be an issue with video drivers in OSX? These macs use Apples version of GMA 950.