I've been suffering from the bug which the machine was constantly waking up by itself when I enabled "Wake for network access". The console showed the event was triggered from Ethernet but no wakeup command was sent during the sleeping period, this issue existed since 10.8.2 and every beta of 10.8.3 never resolve this. I really want to sleep the machine and wake it up remotely ONLY when I do so. Does anyone have a solution for this? Thanks.