Hey All. I'm not sure if this is an iMac problem or maybe a virus problem but I've been noticing that my computer randomly wakes up from sleep. I have a 20" intel iMac core duo. I leave my computer on all the time and it is in my room and i'll notice that the computer will go to sleep but when i wake up it will either be awake with me or even at the unlock dialog. Has anyone else experienced this issue? It seems very sporadic and I'm wondering if someone may be hacking my computer or if i have some sort of mac spyware. I have my firewall turned on at all times as well.