I would upgrade to Windows 7 but I don't have a license and can't afford one right now. And sure, Oblivion isn't the only game out there, but it is one of the three or four I play. I don't play a lot of games and I was hoping my new MacBook with an i7 would run Oblivion, well, if not flawlessly, but better than before and maybe quite a bit.
But as it is, with almost the same identical load order as on my old MacBook, I'm getting very, very close to the same performance.
~ Dani ~