I dropped XAMPP on my Mac yesterday to do some offline dev work. It really highlighted the shortcomings of my 12" PowerBook G4. It's been a tireless workhorse over the last five years, being replaced once by a newer, swisher Intel Macbook Pro that lasted less than six months before I sold the new upstart and returned to the old faithful. It's great for running a web browser, a few terminal sessions and a mail client. But asking it to run Apache and mysql with PHP running on top is proving too much.