I still think Dual Core G4's are suspect. As to answer the question, I was going to upgrade but not because my machine is slow, but for the fact that my mom wanted me to get a DVD burner to make home video DVD's. I'm trying to sell my book for $1000 (even though I think it's worth more) but I've gotten no serious buyers. I don't care though, I love my machine and will gladly be a guinea pig for dual core books when they get released.