I consider myself intermediate linux enthusiast. And i am comfotable with the shell. I have been doiing some reading and I believe that a qualified linux machine could out render on a mass basis. But when you are just constructing and color and texturing i dont believe speed is as important as accuracy. There is a concept of purpose built machine that are only used for a specialized phase of a project and it seems to make sense. That is why I am not ready to count out Linux. But I will probably start with a quad 600 with a Windows 7 as my first Maya computer. I am starting to believe pure visual artists arent interested in Linux if it is to complicated to set up. I am not as visually artistic as the average user and am more programming oriented but I love Maya and everything I see about it.