There needs to be some form of error recovery in the installer, I've had
three installs in a row crash durring post install config. The only way
I've found out of that case is to kill off the installer and reboot the
machine. Some of these are truely fatal (i.e. sending the dhcp request
out the wrong eth iface) but others aren't (i.e. mounting an auxilary
partition that's not part of the install, but was specified in the config,
and it can't be mounted because it's busy (in actuality mounted by hand
from the bash console to find the network config to avoid the dhcp issue
above)). These non-fatal errors should allow a retry or skip kind of
option; while the truely fatal errors should at least provide a gracefull
reboot solution in the gui (for the newbies).