All of the sudden my MBP won't go to sleep on it's own when the energy options timer says it should. It will sleep when I close the lid, and when I manually tell it to sleep. Most of the time when the computer reaches the designated time to sleep, it will sleep for about 5 secs then turn back on. I called AppleCare. They had me reset the SMC and flash the PRAM - to no avail. It seems to have started after my wireless usb mouse started going crazy and I had to unplug it. Could it have something to do with the USB waking it up? Anyone have any thoughts? This computer is less than a month old!!!!