Over the weekend, we reported that the 4.1 update to VMWare Fusion allowed users to virtualize Leopard and Snow Leopard; a strict violation of OS X’s licensing terms.
At the time, we supposed this was a conscious decision on VMWare’s part to leave Leopard and Snow Leopard virtualization up to the user. But no, nothing of the sort: it’s just a bug VMWare’s going to patch.