Wireless not working on Knoppix 6.7.1

[utu]

I start with the machine down, the wireless router up and running OK.

A. I insert the 6.2.1. disk.

B. I boot the machine all the way.
I connect wireless without any problems.

C. I shut down the machine.

D. I remove the 6.2.1 disc from the machine.

E. I insert the 6.7.1 disk.

F. I boot the machine all the way.
I can NOT connect wireless no matter what I do.

G. I shut down the machine.

H. I remove the 6.7.1 disc from the machine

I. I go back to step A.

I repeat the above loop 20 times.

.
My first test is always to look for thumbprints.
A greasy thumbprint is enough to cause a DVD to 'be flawed'.

You can usually see thumbprints on the shiny side of a DVD
if you hold the DVD up to the light at the right angle.
Clean this with isopropyl alcohol & kleenex.

If this doesn't clear things up, then maybe the DVD is flawed
in manufacture. If the DVD is flawed in manufacture it will
not pass MD5 tests, and the supplier should replace it.

Most folks I'm sure do the md5 test first. I'm lazy; almost
all my flawed DVDs turn out to be thumbprint problems, so I
check that first.