@Akira,
Reading through the thread, we keep coming back to the link light staying and the Amiga locking up until its removed every time you try to connect. This sounds hardware related, perhaps with the driver? Do you have another computer (not necessarily an Amiga) that you can try the card with to make sure the card is functional? If it works on the other computer, then you know you have a good card, and the problem lies on the Amiga somewhere.
-David
