Ethernet shows connected - It's not even plugged in!
 

Hi, all.

Got a strange issue.
got me a new Gigabyte Ga-Z77-DS3H with i5-2500K, and it seems to run fine except I have SLOW internet speed most of the time. I have Atheros 9280 card which used work fine when I had Snow Leopard.

First of all, 10.7.3+ doesn't even recognize this card so I had to roll back to 10.7.2, and when I checked my network it looks like in the picture!

I used Multibeast to load kext for ethernet.
I think this is the problem for my slow speed. When I boot into windows on this system, I have no issue with speed. Can anyone help?

Thanks in advance.