MacBook ethernet problem

I'd call Apple if I were you. Also, have you looked in your Network System Preferences?

 

Hello I have the same problem ! Have you now more informations ?

 

Have you got any more information that we could have, it is very vague

 

For more informations :
I bought my MacBook in october 2006. And, now, the ethernet connection doesn't work. At the beginning, it was working very well and, a few months ago, sometimes it wasn't working. And then it just stopped working !
My friend who bouth its Mac at the same time, has the same problem ! But, in her mac, the problem appeared earlier.
It's strange because the mac detects that I plugged the cable. The problem is not with cable or routeur because I tested them with others PC's.
In system preferences > Network, it's said that IP address is assigned but it can't connect (Router IP is missed).
When I run the network diagnostic, I can see a green button near the first point (Integrated Ethernet) but the following point (network adjustments) turns to orange. Thus, other points are all red.
Does anyone know how to fix it ?