When do you turn off your Ubuntu boxes?

[Derek Broughton]

John wrote:

> Steve Flynn wrote:
>> On 01/12/06, *John* <John at dmj-consultancy.co.uk
>> <mailto:John at dmj-consultancy.co.uk>> wrote:
>>
>>     Warmed-up components wear less than cold ones. As for the bearings in
>>     fans, these are non-contact so don't have any friction or wear.
>>
>> Non-contact bearings? Where can I buy my own anti-gravity machine to
>> operate my own non-contact devices and frictionless systems. Perpetual
>> motion, here I come.
>>
> Look into air bearings - the spinning motion 'injects' a film of air
> into the gap between the rotating parts, no contact, just like a
> hovercraft.
> 
I can believe that, but that doesn't mean _no friction_, and how does it
insure that the "bearings" (I mean, really, we have to call something that
doesn't "bear" anything by another name...) can't come into contact with
particulates, causing them to seize?
-- 
derek