I'm not completely sure where to go with this error.
minimyth@G320-1:/etc/conf.d $ cat dhcp
I'm using DNSMasq in DD-WRT equipped router, which worked with a previous install of minimyth and I have retained the same settings from the previous install.
The MythTV backend is running a fresh install of Ubuntu 8.04.
paul@MythTV:~$ ls -l /var/lib/tftpboot/conf/minimyth.conf
-rw-r--r-- 1 root root 10952 2008-07-12 13:57 /var/lib/tftpboot/conf/minimyth.conf
assuming that your frontend is assigned the hostname <hostname> by the DHCP server.