[xubuntu] Can't connect to FIOS when wired

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http://ubuntuforums.org – New to Linux/Ubuntu, I have searched and tried a number of suggested solutions posted here and on other Ubuntu forums. My son received a computer with Xubuntu 9.04 already installed. We first tried a wireless adapter for internet connection, but got no results so I have run a cable directly to the Verizon Router 9100EM, but it connected to google.com and then disconnected. As I said, I tried a few things and now cannot get even an initial connection. using ifconfig, this is the result: eth0 Link encap:Ethernet HWaddr 00:50:ba:d7:6d:70 (HowTos)