OK – this has happened twice in the past three months, although the last time I was not really certain I’d observed it; I put my elbows down on the tabletop, hard, enough to cause a vibration shock to the G3 700 iBook upon which I was working.

There was an extended, low-pitched, piezoelectric-speaker-sound warning “gleeeeeeeeeeeeeeeeeeep” sound – no syslog messages, no nothing else.

I am wondering whether the replacement mobo that it received earlier this year, has one of those antishock things fitted but is not wired to anything?

Or: it could be just dying, which is fair enough seeing as it gets hammered and is soon to be replaced anyway.

Has anyone else experienced this?