Now, is it just my machine (maybe a faulty battery?), or is it normal for my battery life on my new 12" PB to drain rapidly? I use airport all the time, and by current estimates put my battery life at around an hour to an hour and a half. I know this can't be right, but then I figured it might be because of the extra juice needed for Airport. Anyone out there have any ideas? Or should I be on to Apple about a replacement battery?