couple quick things that may apply here...

1. knoppix by default(as far as i've see thus far) calls wireless interfaces wlan0, etc. someone w/ more Knoppix experience will correct me if i'm wrong on this i bet. what's the output if iwconfig after the `ifconfig eth0 up` command? and what about ifconfig, what does it say?

2. it seems the drivers/module aren't in whichever knoppix you have, or at least they aren't being applied for you since Knoppix isn't recognizing it, based on this:
0000:02:00.0 Ethernet controller: Marvell Technology Group Ltd.: Unknown device 4362 (rev 15)
try googleing it to see if it takes extra steps in any other distros(esp. debian).

maybe one of those will spark an idea for you, if you haven't tried it already. sorry i couldn't help more.

edit: have you tried to find what module that other "auditor" deal uses (where it's working)? compare both lsmod outputs, i'll bet that'll shed at least a bit more light on this issue.