This problem occurred for my friend on his laptop when he upgraded from Gusty to Hardy. I first tried going into recovery mode and resetting the hostname, but there was no change. So instead I used the network-admin to change /etc/hosts; I aliased 127.0.0.1 as the hostname and localhost.
I'll try reproducing this on my own machine later, and see if I can confirm that network-admin corrupts the hosts file by adding the domain to the end of the host.
This problem occurred for my friend on his laptop when he upgraded from Gusty to Hardy. I first tried going into recovery mode and resetting the hostname, but there was no change. So instead I used the network-admin to change /etc/hosts; I aliased 127.0.0.1 as the hostname and localhost.
I'll try reproducing this on my own machine later, and see if I can confirm that network-admin corrupts the hosts file by adding the domain to the end of the host.