The appropriate stuff should get written to /etc/hosts and /etc/network/interfaces when you choose "Reboot the system" from the main menu, if the network hasn't ever been configured at that point. It seems that this didn't happen on your machine, for whatever reason.
Did you actually use this option, or did you continue the installation in some other way (e.g. using the new "chroot without rebooting", or by hitting Ctrl-Alt-Delete, or anything of that kind)? p. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]