Hey all I have tried unplugging the network cable from the back of the machine and re-plugging it in, I have used a different port on my switch, which I have previously used and know it works well. Firts thing i did was ping 192.168.0.1 (my internet sharing machine), and was told that the network was unreachable. I have tried using a fixed ip address (192.168.0.5 and 255.255.255.0 subnet mask), still no joy. Network is unreachable. So, after this, I tried with the command sudo ethtool eth0, which returned with the output: glenn(a)glenn-amd1: [sudo] password for glenn: sudo:ethtool:command not found. glenn(a)glenn-amd1: This is the directory /etc/network glenn(a)glenn-amd1:~$ cd /etc glenn(a)glenn-amd1:/etc$ cd network glenn(a)glenn-amd1:/etc/network$ ls if-down.d if-post-down.d if-pre-up.d if-up.d interfaces glenn(a)glenn-amd1:/etc/network$ cat interfaces auto lo iface lo inet loopback I then tried removing the interfaces file, in the event that I could start over, but still no luck. when I run dhclient I get: glenn(a)glenn-amd1:/etc/network$ sudo dhclient Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ Listening on LPF/pan0/92:93:61:a0:d3:80 Sending on LPF/pan0/92:93:61:a0:d3:80 Listening on LPF/eth0/00:0d:87:35:aa:32 Sending on LPF/eth0/00:0d:87:35:aa:32 Sending on Socket/fallback DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 17 DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 9 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10 DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 9 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14 DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 11 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6 No DHCPOFFERS received. No working leases in persistent database - sleeping. glenn(a)glenn-amd1:/etc/network$ Maybe I just have a faulty network adaptor on the motherboard. But if that was the case, wouldn't it NOT be displayed with lspci? Glenn.