Bad Power Mac G4 Hard Drives -- Apple has revealed that some Power Mac G4s (Digital Audio - those released in January of 2001) contain defective 40 GB and 60 GB hard drives that can damage files, cause data loss, and potentially prevent the computer from starting up. Only a limited number of machines sold in the U.S. and Canada are affected, so if you have a Power Mac G4 (Digital Audio) with a 40 GB or 60 GB hard drive, read the Tech Info Library's instructions on how to determine whether your Mac has a bad drive. If so, Apple will replace the drive under warranty. [ACE]
Wake On Demand in Snow Leopard
Putting your Mac to sleep saves power, but it also disrupts using your Mac as a file server, among other purposes. Wake on Demand in Snow Leopard works in conjunction with an Apple base station to continue announcing Bonjour services that the sleeping computer offers.
While the requirements for this feature are complex, eligible users can toggle this feature in the Energy Saver preference pane. It's labeled Wake on Network Access for computers that can be roused either via Wi-Fi or Ethernet; Wake on Ethernet Network Access or Wake on AirPort Network Access for wired- or wireless-only machines, respectively. Uncheck the box to disable this feature.