Hi all, I have an aging iBook G4 (Could be late '03/ early '04 model). I'm trying to upgrade it because I'm a teacher and can't afford to buy a new one and I don't want to go to Vista either , so... I've ran YASU to clean up, and will buy 1GB RAM (max I think...), Only thing is 4th Gen iPods don't work on iTunes versions prior to 8 and I can't install iTunes8 on Panther 10.3. (coincidnece? ) So, I need to know if 10.5 will run a lot slower on an old iBook than 10.4. And if you think it is worth the extra $50-$70 to get a 10.4 over 10.5 See specs below. It is still a bit slow but I haven't upgraded the RAM yet from 256MB but will very soon. iBook OS X 10.3 1GHz G4 1GB RAM Details M9418LL/A Thank you for your help!