And again I set up my system again. From scratch.
Harddisk cleared. Booted from a 3.8 CD. Installed MorphOS with all defaults.

And again:
I open System -> Network
Enabling bcm43*
Waiting for the networks to show up.
Selecting my Network and entering my secret passphrase.
The "bulb" right next to my wifi network becomes first red, then blue, finally green.
And right after this "bulb" gets green the system freezes.

So what now? Hardware incompatible? Defective?
BTW: I am writing this message from OSX 10.5 with the internal Wifi tunred on and connected to my my accesspoint.

Maybe there are some different revisions of the 5.9er Powerbooks. Maybe some different revisions of the bcm43* wifi modules.
Yes I know there are lots of people out there where the internal wifi is working. But what I am doing wrong??

So what kind of information I can provide to get some light into this?