Adding OpenDNS to your list of nameserver under ubuntu
Sometimes your main DNS server screws up. Sometimes they want to block you from certain places. No matter what the reason, here's how to circumvent the problem altogether by using OpenDNS with your ubuntu box.
Using sudo edit the file /etc/dhcp3/dhclient.conf.
sudo vim /etc/dhcp3/dhclient.conf
Add OpenDNS DNS server ip by adding the following line:
append domain-name-servers 208.67.222.222,208.67.220.220;
Save and restart your network. If it works you should have in your /etc/resolve.conf the following lines:
nameserver 208.67.222.222
nameserver 208.67.220.220
Done.

