Hyper Fan + Sleep Mode?
After I leave this iMac G5 (not iSight) on for any random amount of time (1 min, 3 weeks, it's variable), it will turn off the monitor, and rev the fans up to max speed and go completely unresponsive.
The only solution is to hold down the power button for a hard shutdown.
This problem does not happen when it goes to sleep, necessarily, as I put it to sleep and wake it up over and over for testing.
Any thoughts?

