I can confirm this bug on a fresh install of gutsy on a Dell D600 with the BCM4306 wireless card. I applied the debdiff from comment 33 and this fixes the problem - I can now go back and forth between wired and my WPA2 Enterprise wireless without trouble.
From the looks of it, this patch has not made it into either gutsy or hardy, but hopefully it will soon.
Alexander - let us know if there's anything else you need to help get this resolved.
I can confirm this bug on a fresh install of gutsy on a Dell D600 with the BCM4306 wireless card. I applied the debdiff from comment 33 and this fixes the problem - I can now go back and forth between wired and my WPA2 Enterprise wireless without trouble.
From the looks of it, this patch has not made it into either gutsy or hardy, but hopefully it will soon.
Alexander - let us know if there's anything else you need to help get this resolved.