I'm not sure why only Ivy Bridge. I can say though that the EFI firmware didn't ...

		mitchellh on Sept 21, 2012 \| parent \| context \| favorite \| on: VirtualBox hotfix now available for OS X 10.8.2 pr... I'm not sure why only Ivy Bridge. I can say though that the EFI firmware didn't cause the bug, but in fact the 10.8.2 software upgrade did.