Have you seen this:
http://www.knoppix.net/forum/viewtopic.php?p=19004
Pump seems to have been the culprit there. You can disable it with "update-rc.d -f pump remove" as well as editing the file mentioned in the link.
Make note of the Snumber first (cat /etc/init.d) if you need it back, although defaults might work.
Be warned though that I use dhcp so I don't really know if removing pump borks your network, but as said, you can allways put it back.

There's also something in the faq which could help:
http://www.knoppix.net/docs/index.php/FaqNetwork