Perhaps at this point we should mention the clever Mac OS feature where it refuses to return from sleep if it can't find one of the disks I knew about when it went to sleep...

...a very handy feature if you take your PowerBook travelling without realising it has this "feature".

P.S. I'm going to sue Mr Jobs for damages if I stub my toe on this immovable object that is the Dual G5 again
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Remind me to change my signature to something more interesting someday