Hello List, Just wanted to relate that I am a Tit. g4 1.67ghz Powerbook owner. I bought it on ebay and the original 'owner' sold it 'as is', without the original OSX disks. In any event, I am also a self-taught Mac user, therefore VERY prone to making mistakes in using the pb & sussing out problems with this machine. The powebook seemed to be having problems-but not really very serious ones- in early Dec during startup and in using certain applications, so I heeded some advice given here, such as getting info via Terminal. I really didnt know what I was doing, so using a program like Terminal & AppleJack-for me- was a BIG mistake and perhaps led to the major system/hard disk malfunction that developed around Xmastime. I could no longer get anything but an incomprehensible error message out of AppleJack-doing a command-s at startup-and the startup never got any further than the whirling circle on the grey screen. I contacted a local technician and he said that the system malfunction was next to impossible for him to diagnose & he'd never before seen anything like it. A mac friend of mine said that a previous user of this pb might have processed movies or videos & that process tends to really upset formatting of info on the disk. The seller of this unit may or may not have done a clean install of the disk before selling it & the technician doubts that. At any rate, I appreciate the notion of info sharing, but, in effect, I as an amateur have little ability to understand what y'all are saying and recommending a large part of the time. Just a note for everyone--this game can be very expensive, of course, especially for ignoramuses like me. ( I paid the tech about 450 dollars to fix the problem--he recovered just about all my jpgs and other data, so at least I know I must regularly back everything up.) Anyhow, I now have a perfectly functioning pb since he formatted the disk-except that it slows down considerably when I've just started Limewire-and I have to replenish a lot of the software that was discarded in the clean/install that the tech wound up doing.