I have posted to the 5.0 DVD buglist the following:

For Knoppix 5.0.1 both DVD and CD
1. Several different routers correctly configured several different net chips with DHCP in previous versions and are no longer doing so.
2. There is a problem with hardware detection, specifically: NO /proc/pci which exists in previous versions.
3. Intel and 3COM network chips that worked in previous versions are not being properly detected or configured .

See: http://www.knoppix.net/forum/ (Networking) 5.0.1 (2006-06-01) DVD and networking for details.

I hope these problems are fixed soon. New software and features are nice, but the old stuff has to work or nothing is gained.