I have an old Powerbook (G3 Series aka Wallstreet) which officially supports OS X (v. 10.2). I'd like to buy OS X and install on it instead of OS 9.2.2 which I currently run, but I fear that it just would be so slow as almost being unsuable. Has anybody tried OS X (v. 10.2.2) on a Powerbook G3 with success?