Hi, have a question that I hope more tech-savvy people can help with I would like to use FaceTime on my Macbook so I would need to upgrade my OS to Snow Leopard. Mine's a white Macbook, early 2009 model running Leopard 10.5.8. I've never upgraded any of the parts. I'm wondering which one to upgrade to - Snow Leopard or Lion? With the current hardware, will either OS run more slowly? I'm just a bit worried about that. And in case it's helpful, the technical specs of my Macbook are: 2.0GHz Intel Core 2 Duo processor 120GB hard disk drive Thanks in advance!