I have a 1.33 GHz 15" PowerBook G4 that I think was released last year in April. I got mine in May last year and just a few days ago, I downloaded some freeware and shareware and the Apple installer opened as usual. But then when I got to the bit where it asks you where you want to install your applications, again, it came up with my Macintosh HD as usual but this is what it said ">4 GB Free". I didn't quite understand that so I checked up and in actual fact I have 19.56 GB left. If this is a problem with my hardware does it mean that I am only going to be able to now install only 4 GB of software because I really wouldn't be happy about that. And don't think about Apple Care because I don't have it. Please Help. I am leaving at six o clock. P.S. If you have a solution please go through it slowly because I'm good at working the computer, but not going deep inside it; letalone the os!