Hello, I tried to get answers in the general OS X forum but nobody helped. Maybe someone will here: I have Mac Pro 4,1 and it wakes up from sleep during the night, like every two hours. It doesn't bother me much but since I sleep in the room also, it would be nice if it didnt happen. I am used to putting computer to sleep, not to shut it down (but even if I shut it down the computer power ups). In this link is a log from console so maybe someone more technically savvy can help me out: https://docs.google.com/document/d/1...354RHqGaQ/edit I have Time Capsule set up with the machine and also Carbon Copy Cloner that does backup at 8:50 and 9:10 each day but it shouldn't happen during the night (I have the wake up feature disabled). Other than that, I'm not sure what could be the culprit. I also upgraded my RAM from ECC kind to DDR3 kind which shouldn't cause any problems - at least I'm not having any during usage. Can anyone see in the logs what's going on? Thanks EDIT: I can see Wake reason: RTC (Alarm) showing up in logs but I have no alarm set for that time.