Slightly off-topic, but Apple is offering to replace the power supplies and system fans in Mirror Drive Door PowerMacs for free (+ shipping). Enjoy the silence as 42 cranks in the background... I already ordered mine.

https://depot.info.apple.com/generic/index.html

Power Mac G4 Power Supply Exchange Program Announcement

The Power Mac G4 Power Supply Exchange Program offers owners of Power Mac G4 (Mirrored Drive Doors) computers the option of reducing the operating acoustic level of their computers by exchanging their original power supplies and system fans for new, quieter versions. Participation in the Power Supply Exchange Program is optional.

The Power Supply Exchange Program kit is available at no charge, with a shipping and handling fee of US$19.95 or equivalent local currency. The kit contains the following items:

* Power supply (360 W)
* System fan
* Allen key (2.5 mm)
* Installation instructions:
o English
o Dutch
o French
o German
o Japanese
o Italian
o Spanish
o Swedish
* Prepaid return airbill and instructions for returning the original components to Apple

This program begins on February 21, 2003 and ends June 30, 2003.