Hi everyone, So I have here a 1,1 Mac Pro that's running 10.8.3 Mountain Lion. In the past, I noticed that it was taking around 20 seconds just to fall asleep (after choosing Apple > Sleep). When that happened, I was thinking that my sharing preferences were possibly interfering with it and causing a delay before sleep. I turned off all sharing for my computer (and turned off 'Wake for Internet Access,' and what not), and it began going to sleep instantly again... However, this problem has come back, and this time, my sharing prefs are already off, there are no documents sitting in my printer queue, and I close all applications before pressing 'Sleep.' This time, I am confused as to what is causing this thing to take forever to fall asleep. It could be an intermittent problem, due to my three internal HDDs and one external, but it seems as though they aren't processing info before sleeping (as I don't hear them thumping). I noticed, though, that in MenuMeters, I see a little bit of network activity while it is going to sleep... I am wondering if this is the culprit, but I am not sure. I just got MenuMeters recently, so I cannot say whether or not this network activity was present even while the computer WAS still able to sleep just fine. I have no idea where this network activity is coming from, or whether or not it's even an issue. Would anyone know the problem? NO, I do not have open printer queues, and NO, I don't have stray applications open. Thanks, -MDD EDIT: I found out that my external iSight camera was causing this to happen. I simply unplugged it, and now the computer goes to sleep instantly. Maybe just some weird iChat/iSight prefs or something like that. If not, I don't exactly know why the camera was causing this--note that I leave my camera's lens closed.