Apologies I misread the interfaces file - there is are a lot of carriage returns in the file so when I ran cat /etc/network/interfaces it looked like it only had one line in it. I don't know the reason why the file is formatted like this...
Please find complete file attached. iface lo inet loopback iface eth1 inet address 192.168.1.11 netmask 255.255.255.0 gateway 192.168.1.1 wireless-essid BTVOYAGER2091-79 ap 00:12:A9:03:F8:9D auto eth2 iface eth2 inet dhcp auto ath0 iface ath0 inet dhcp auto wlan0 iface wlan0 inet dhcp auto eth1 -- local loopback interface isn't brought up on boot https://launchpad.net/bugs/83715 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs