It appears kanotix is just as fragile as knoppix for apt-get upgrade:

Fresh install kanotix BH9 to hda5; then apt-get upgrade. Although this is the latest release, upgrade wanted 400+ Meg in new archives.
As soon as it started setting up, got a 'possible database corruption error, will attempt to repair..." then a bunch of debian config setup questions.
Then the setup process started & almost immediately errored out:
Code:
Unpacking sed (from .../archives/sed_4.1.2-2_i386.deb) ...
Setting up sed (4.1.2-2) ...

No `START-INFO-DIR-ENTRY' and no `This file documents'.
install-info(/usr/share/info/sed.info): unable to determine description for `dir' entry - giving up
dpkg: error processing sed (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 sed
E: Sub-process /usr/bin/dpkg returned an error code (1)
Tried apt-get -f install, then tried apt-get remove sed figuring to remove/reinstall it. Dire warnings about removing an essential package but force it anyway, now it won't reinstall (same error).

There was a post on the German kanotix forum about this same error, suggested fix (Kano) was to insure kanotix sources are in the sources.list (they are). This does not repair the problem.

Attempted to continue with the upgrade but errors reported in several packages which need sed to install or remove. At present I have removed sed & it refuses to reinstall.

Cannot post on the Kanotix board, it recognized my registry but won't let me log on.

Any ideas other than the obvious reinstall the whole thing & start over?