I've got an iMac DV SE. Ever since Apple did away with the slider bar for the hard disk sleep in the energy saver preference pane and changed it to "Put the hard disk to sleep when possible" checkbox, my hard drive *never* spins down anymore. I did replace the drive over a year ago with an 80 GB 7200 RPM drive, but it used to spin down before the afformentioned software change. It's annoying because I leave my computer on all the time, and don't want to put it to sleep because I need the network connections to stay open. Anyone have any ideas?