I have a MacBook and I sometimes have trouble with the automatic sleep function of it. Sleep, Standby and all that stuff usually works well, only sometimes when I just keep my MacBook on, it doesn't go to sleep by itself. First I thought I probably had something opened that's still doing something, but then just for testing, I closed everything but mail, address book and iCal, but it would still not sleep, just turn off the screen and keep running.
So I'm wondering right now, if there is any way to find out, what is keeping the MacBook awake? Any kind of log or something? I couldn't see anything suspicious in the processes.
Any advice would be appreciated.