I would like to upgrade my Aluminum PB G4 1.5Ghz to one of the newer OS's. I have 10,4 on my intel mini. My question is, which version 10.4 or 10.5 have powerbook users had more success with? Are there any issus to be weary of? Is it worth it to upgrade? I have searched some forums but most hits are odd little issues. I'm looking for any major issues that may detract me from upgrading. I know sometimes there are issues with lagging and increased processor usage with newer OS's. Also, would it be better to do a clean install? I don't have any data that I can't back up to Ext. hard drives. I'm pretty knowledgeable of computers, but this is my first OS upgrade as a mac user. Will I have any issues with powerbook G4 specific hardware not being recognized or anything? Thanks for your help!