Apple has released a firmware update for early 2009 Xserve models that improves "compatibility with virtualization products utilizing VT-d and system reliability during the boot process." More information regarding installing firmware updates on Intel-based Macs is available on Apple's Web site. Instructions for updating a headless (i.e. without monitor) Xserve are also available. (Free, 1.81 MB)
How Loud Are Your Mac's Fans?
When they get hot, Macs turn on various internal fans to keep components cool. The noise can be annoying, but just how loud is it? If you have an iOS device with a built-in microphone, you can download one of many free sound meter apps (search on
decibel in the App Store) and see if you're subjecting your ears to a truly unreasonable noise level.