I've never had a harddrive die on me yet, so I don't know the indicators of it. This is with my Powerbook G4 15' OS 10.5.2 Well when im running some processes, I hear a small tingling noise inside the mac, i didn't know what it was but it wouldn't stop when i was watching movies. Then after a while the system will lock up (at this point the laptop is pretty hot). But if i just leave it on doing nothing, no crash will happen. And not much of the noise either. So i was wondering if this was telling me that my harddrive was going to die. I don't want to blow 100$ for nothing.