While upgrading from 6.0 to 6.1 via FTP I had several errors
that the installer did not handle very well. It apparently
just crashed the script and displayed a traceback. It took
me awhile before I figured out how to deal with this.
Clicking OK or DEBUG just seemed to eventually get me to a
hung system. Scrolling the traceback and trying to interpret
the messages eventually allowed me to get past the problems,
which I have listed below:

* /etc/lilo.conf was linked to /boot/lilo.conf on my 6.0
system, but that is not valid with the installs mounting
setup, so no writtable file existed. The lack of checking on
this may be related to the other problems with lilo.conf
that have been reported.

* Upgrade was done via FTP; transmission errors and login
failure due to exceeding user limits lead to script crash
and the traceback.

This may be tough to deal with, but I think a complete
novice user would be stuck if they hit these.