There seems to be a curious phenomenon going on in the Apple iMac Tech Exchange Forum regarding a “Green Light of Death” (we didn’t make up the name). It appears for an unlucky band of iMac users, Revision A and B so far, that the iMac freezes during sleep. Here’s how the Green Light of Death works:

So far the only fixes appear to be disabling “sleep mode” in the Energy Saver control panel or sending it back to Apple for a new analog board and power supply. The official iMacs of NoBeige.com (Revision A and C) are currently not experiencing this problem. If you are currently experiencing the Green Light of Death, send us a feedback email.