On 2/24/06 1:28 PM, Winston MacKelvie wrote: > Anyone have a clue as to what would cause my one piece iMac G5 with > 10.4.5 to suddenly click and shut off at random times. Could be > during launch or 10 hours later or even when not being used. Does the > same when booted from the Tiger DVD. Do you have it plugged into the wall, or into a surge suppressor strip, or into an uninterruptible power supply? What else is sharing the circuit? Are you in an apartment or in a home?