Starting from v3.3, I understand that Knoppix has removed `non-free' apps like acroread etc.
I've loaded V 3.3 and it still has acroread. :-(
There is Morphix, Damn Small GNU/Linux etc.
Will try that out.
Better still, just install the base system of Debian GNU and go on adding apps which are Free and which you need.
I guess Debian is fine, but I don't like the installer. ;-)
I really like the Knoppix Installer. It's short, sweet, to the point and gets the job done.
Regards
Rishi