Not another battery question, Well kind of. Is it normal for a fully charged MBP battery to use it's whole power just copying 1 disc which takes around 45 to 48 minutes or so. I would usually do that plugged in, I know, but just wondered if it happens with all you guys. I probably should ask this in the MBP forum, but I'm guessing it's common? The big users for me are flash, QT and any disc playing, DVD. But...... copying 1 x 45 minute dub on to a DVD is a 100% battery killer.