I have the last generation MBP, which I bought right after it came out in late March. Just recently, the computer has begun to not stay asleep with the display open or closed. Regardless of whether I command it to go to sleep or if it automatically goes to sleep due to inactivity, within 10 seconds of it entering sleep mode, it will wake up. I have tried resetting the system management controller (SMC) to no avail. Please help!