Unity crash on startup OS X 10.7.3

I'm encountering a crash on startup on OS X with unity-3.5.1, 3.5.0, 3.4.2 and 3.4.0. I've tried complete uninstalls and clean reinstalls of each version and I can't get Unity to launch.

When I attempt to launch it my processors go crazy,and continue to do so until I force quit because Unity is not responding.

I've repaired my disk permissions multiple times and it doesn't seem to help.

Any ideas to fix this? I would really appreciate any help, I'm in the middle of a project and it's dead in the water until I get Unity running again.

Here's what shows up in Console when I try to launch Unity:

4/20/12 3:31:39.479 PM Unity: NSDocumentController Info.plist warning: The values of CFBundleTypeRole entries must be 'Editor', 'Viewer', 'None', or 'Shell'.

4/20/12 3:31:39.543 PM mDNSResponder: Bad service type in castle-xiaoma._unityiphoneremote._tcp.local. Application protocol name must be underscore plus 1-15 characters. See http://www.dns-sd.org/ServiceTypes.html