My MBA no longer sleeps after upgrade to Mavericks. In the past with mtn lion I would shut the lid and in the morning I would have almost as much battery as i did when I closed the lid. now my battery is empty and the OS has shut down. I've done a SCM reset.. and checked my setting for pmset with others. even selecting apple/sleep doesn;t work.. I get a message in pmset -g that sleep prevented by powerd, coreaudiod or apsd Any Ideas?