Hi there! I have a 12" PowerBook and the internal hard drive recently kicked the bucket. Apple wont cover the repair, yadda yadda... long story. I'd love to buy a new machine, but I don't have the money to do so (and I don't have the $1200 Apple wants to repair my PowerBook...) So I've figured out a temporary solution: boot off of an external drive for the time being. I need to buy an external drive anyway to back up my data (Time Machine is right around the corner!) But I've heard that external hard drives can act funky if you use them as a boot drive for a while, and I don't want that to happen. USB 2.0 and Firewire 400, 250 GB or more is what I'm looking for. I'd love to hear your suggestions! Thanks!