Macbook Pro Mid-2012, ethernet heating I am a Mac newbie and I have a new 13" Macbook Pro.

I used the Ethernet connection for wired Internet in my dorm room, but after using it for half an hour or so, the Ethernet port and the area nearby started heating up. After it got considerably hot, I unplugged the Ethernet cable. The cable is CAT5e (not CAT6 for gigabit ethernet) and a rather cheap one and I sincerely hope that this is the reason for the heating problem. Is it so? Any ideas?
It depends on what you were doing on the Mac. For instance, if you were doing a lot photo editing the heat build up in that area is normal. This is where the power adapter plugs in and the internal heat-sink is located. The more power processor needed the hotter that area becomes. Not to worry though, the built cooling system in the Mac will take care of the heat buildup.