"We won't enable this kind of functionality until Apple gives their blessing for a few reasons," Rudolph told Ars. "First, we're concerned about our users — we are never going to encourage illegal activity that could open our users up to compromised machines or any sort of legal action. This is the same reason why we always insist on using a fully-licensed, genuine copy of Windows in a virtual machine — it's safer, more stable, fully supported, and completely legal."

"We're very interested in running Mac OS X in a virtual machine because it opens up a ton of interesting use cases, but until Apple changes its licensing policy, we prefer to not speculate about running Mac OS X in a virtualized environment," Krishnamurti added.