Hi Guys,

Just saw this thread.

I had this once.

My machine was left on ( I cannot remember if movies were playing or not).

I heard the fans speed gradually increase and keep increasing.

I have come across this behaviour before when I fitted a bad Atto SCSI card whilst upgrading a G5 to a SCSI drive; (fitting a good card solved the problem).

Hugh described it as a "kernel panic".

The odd thing is it happened when I was doing absolutely nothing at all with the machine but I was in the room working on something else.

Pretty sure this was on G21.

The interesting thing is the machine it occurred on doesn't have a SCSI drive, just a WD Raptor (Richard its the one you gave us).

At the time I just hit the reset button sharpish as the speed of the fans was increasing in an unhealthy manner.

It has not occurred since and I though nothing more of it until now.

Rob