I love that the new MBs and MBPs allow for hibernation, but there is one feature that I can't seem to find any reference to. Is it possible to set up (or hack) Safe Sleep to allow the computer to hibernate after it has been sleeping for a certain amount of time? I like that the computer will deep sleep if the battery is nearly dead, but I want it to deep sleep after 30 minutes or something, not after 2 days when the battery level is so low the computer can't sustain power to the RAM. Are there any applications available to modify this? I'm going to be getting a new MBP in the next week or so and I want to make it as perfect as possible.