Hi, I noticed this strange thing with my 15" aluminum PB 1Ghz. If I run on battery until the battery is completely drained and the machine goes to sleep, it becomes extremely difficult to wake the machine. After plugging in the AC, it just will not wake up; it also will not shut down when I hold down the power button. However, if I persist in trying to get it to wake up, trying every 10 minutes or so, eventually it does wake up. Any thoughts or suggestions on this? (BTW, this never happens with manual sleep.) Also, I find that some DVD's will not eject the entire way out of the slot drive -- they seem to go about 90%, then get kind of stuck. Are there any tricks or solutions to solve this? The drive works fine otherwise. TIA.