Macworld: News: Apple unveils 2.0GHz MacBook

Is it time for me to upgrade? I have a 500 MHz Dual USB iBook 12″, and a 1 GHz Powerbook 17″. Pretty much the small end and the large end of the laptop line. The Powerbook is newer at about 3 years old. My AppleCare will expire in a month, and then it’s just a matter of time before it makes more sense to buy a new machine than fix the old one.

Or, I may just get sick of the old ones. I just helped my father buy a 20″ iMac Core Duo. It is sweet. But there’s nothing new that completely grabs me. No new type of serial port, I have a PC Card for USB 2.0 and the Powerbook has Firewire 800. Airport hasn’t gotten faster. Why buy an upgrade, if I don’t care that much about speed?

When do you upgrade? What triggers you into a buying frenzy, and how bad does it get? What are you waiting for?