I think this is the important line:
Original von kricha01
Can't get own host name. Your system is severely misconfigured
Does /etc/hostname exist?
If it doesn't then create it and put the name of your machine there.
I found this reference, search for "hostname":
http://gentoo.vidalinux.com/?q=node/view/35
And more general:
http://www.cpqlinux.com/hostname.html
Note: I found it confusing that some systems seem to use /etc/hostname and others /etc/HOSTNAME. The Gentoo-specific page mentions the lower-case variant.