Hi, long time reader, first time poster. I've got a 2 year old G4 ibook (1.07GHz running OS 10.4.6) My problem started with my fans being permanently on, despite no heat issues. I zapped the PRAM and reset the PMU. Still on and noisy. Read a few conflicting reports about dust in the innards, faulty logic-boards and just that older fans just get louder. Today the hard-drive sounds like it's constantly working even when I'm doing nothing and alarmingly after trying to repair permissions my SMART status says failing. This ever happen to you? Is my hard-drive about to die? Thanks for any advice.