Can anyone say "Vista Panther" one in the same, and as for vitualzation I sure hope not, I want to dual boot and thats it, I want to keep my OS X seperate from my XP, and you can not have a system utilze the graphics card hardware acceleration at the same time think about that for a min then respond, ahving to OS running at the same time can never be good, they both are using the same low level system resources and will result in future crashes, as long as the option at least of dual booting is included I will purchase Leapord becuase I am not willing to have to OS needing the same hardware all the time it is bound to present problems for everday constant use, however if Leapord allows me to dual boot and to keep the same partition that I have now with everything remaining itntact on both, then sign me up.