Hi, I'm on my first MBP (13.3"), and noticed that my ethernet jack works, but doesn't light up when connected. My other desktops and laptops all have LEDs in or next to the jack, but the MBP doesn't seem to have any LEDs built in. But, I saw a pic of a MBP in a review, and it shows a lit ethernet plug. So I'm wondering, do some MBPs have ethernet connectivity LEDs, or is the reviewer using a cable with built-in LED? Thanks, and sorry if this is too much of a bonehead question.