did you try to ping anything and see if that works. I had a problem kinda like that awhile back and it ended up being something with my network card so trying I was told to ping something.
type
ping
www.google.com and then press ctrl+c and see if any of the packets went through
and then try
ping 64.233.161.99 and then press ctrl+c and see if any of the packets went through
from what I understand if the second one worked and the first one didn't then it probably has something to do with you DNS servers.
if neither of the worked then try " ifconfig eth0 10.10.1.1 netmask 255.255.0.0 " as root and then see what happens. I'm pretty new to this so if that doesn't help sorry but that's the best thing I could come up with.
-Adam