I have a partition on my 15 inch Macbook Pro 2.53 GHz. I have Windows 7 installed in BootCamp. (And yes this is a legally owned, and licensed version of Windows 7 Home Premium) I use VMware fusion 3 to access the bootcamp partition from within OSX (Snow Leopard). But about a month or two into using it this way, Genuine Advantage pops up and tells me the copy of Windows 7 I am running is not authentic. I then try to authenticate, and it won't let me. I finally have to call Microsoft and have them work through it with me over the phone, and they manually reauthenticate it from their end. Then again, it works for a month or two, and then I have to do it all over again. What's up with this. Is there anyway to stop it from happening? I used to run XP this way all the time and it never did this. Is there some thing I can do to make this stop happening? Please help, this is very frustrating and time consuming.