Hi, actually I'm using a Parallels Build 1940 (don't know whether it is version 2 or 3, at least I would assume it is even older ... ?). Now I planned both switching to the new Parallels 3 (bought and downloaded the premium edition yesterday) and switching to leopard. Currently I see many people having problems while migration to leopard. So, is it a godd advice to migrate to leopard? Should I perform the upgrade of my parallels installation before? And whats more, can I assume that my VMs of the Build 1940 will work with Parallels 3 Premium? Thanks in advance MrB.