[ubuntu] DNS nameserver problems after changing ISP

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http://ubuntuforums.org – Hi All, I'm becoming more and more frustrated with Ubuntu. :( I'm using the Precise Pangolin distro. I changed ISP provider from Comcast to RCN. While my macbook laptop and Windows PC smoothly embraced the new ISP, my Ubuntu PC couldn't automatically detect the DNS servers. I have internet but unable to resolve anything. In /etc/resolv.conf: nameserver search cable.rcn.com I've played with gnome-control-center network and tried to force the system to accept the DNS servers of RCN, but it seemed hopeless. I tried a prepend domain-name-servers to Google DNS in dhc (Hardware)