My 3.06Ghz MacBook Pro just came yesterday. The hard drive squeaks once every 30 minutes and it always comes in twos. 1. Open 4 apps 2. system halt / pause (half a second) 3. click-clack 4. squeak 5. click 6. squeak sounds like a hamster is in there chilling out. System is fine and functional on every other level. It's a CTO and I honestly don't feel like shipping it back to Apple. Think the apple store will just replace the 500GB 7200 RPM drive in the store? What if I can't replicate it? I guess just back it up and wait for failure?