wireless lan problem

Hi,

ihave got a i386 Laptop and have installed FreeBSD5.1 today, before I had 5.0. 
Now I do have the following problem:

when I want to install my elsa MC11 wireless pcmcia card and I
do
ifconfig wi0 inet 192.168.0.X ....

FreeBSD hangs quit a time..
than it states something like:

wi_cmd: busy bit won't clear

several times


and finally the card is not working.

With FreeBSD 5.0 everything worked fine!

Any help?
sincerley


Gerald Mixa