[lwlan-user] [non-subscriber] WLAN is busy sleeping in interrupt context

[tempnet.net -]

I am running a 2.5.21 kernel and a MN-510 prism2_usb NIC.

I had multiple problems with it on 2.4.18 so I upgraded the kernel and finally it configured and compiled easy. But now when I run the wlanctl-ng lnxreq_autojoin ssid="my id" authtype=opensystem
I get the string like its working untill the very end.

It says:

*** WLAN is busy-sleeping in interrupt context!

three times.

Now I am still able to ifconfig wlan0 up and down but I can never get a network connection out of it. We're using an airport basestation and it even reads the signal as being top noch. But I just cant get the thing to hit the accesspoint.
Cant ping it or anything else. Any ideas? 

-Matthew