Anyone running win8 on a mac?

Hey guys,

I've had macbook (white unibody, late 2009) for a couple years now. I really wanted it to be perfect for me (i'm a student) but it hasn't been what I wanted or needed. I'm looking to get a new machine, probably ASUS Transformer, or Yoga 11s. In the meantime, however, I'm trying to run win8 on my macbook, using Bootcamp. It's working, but it will only run for about an hour before freezing completely.

I really want this to work. I like win8, and I actually need it to work for school, but it's not usable. Any ideas, tips, or tricks?