I'm still on a PPC G4 Mac and this past week alone really shows how much I need a new computer. Two freezes in a week while playing a YouTube video in Safari is a very scary experience when this is my primary machine. I have never experienced anything like this before on this machine for as long as I've owned it, going on 5 years now! I would expect two freezes a day on a beige box, even a new and shiny one, but since this Mac is as old as it is I guess I shouldn't be surprised. The hardware is barely hobbling while it's running modern software but it has served me well all these years. Now because of the freezing, the other apps that I had open at the time: Mail, iCal, and iChat were also affected because of having to reboot my Mac. Mail's index was damaged and had to be repaired. It was repaired all right but not completely. I lost nearly two months of email! Now I have to delete all of my accounts then reenter the information and download my entire mail from gmail from the beginning! Come on Apple, let's get these iMacs rolled out now! Please, pretty please!!! I'm ready to give you guys my $$$!