Hello fellow mac users, I'm pretty new to the forum, but seem to be getting around quite easily, I just have a few questions about upgrading my OS to 10.5 on my G4 Powerbook. Here is the 'About This Mac' screen grab I took. I have read other posts on the forum from other people saying it's worked fine on their G4, but my main worry is the applications I have running on my powerbook. Would I just have my G4 working overtime if trying to run CS3 and using the latest OS? Is there anyone else out there with similar specs to my G4 that is using 10.5 and Adobe CS3 programs? If so, have you noticed any major lags? Also, I'm aware that CS2 is not compatible with Leopard, but does this include After Effects 7.0? I really need that program for my freelance work, and can't really afford to purchase an upgrade at the moment. I have also had a look on youtube and have seen Leopard running on G4 powerbooks which is great, as I would love to upgrade to use some of the new features like 'spaces'. If anyone can help a confused G4 user, that would be super! Thank you in advance to all those who contribute P.S. I am absolutely loving this forum, it's just great!