You need patched kernel for that. Once you remove the card, Nokia kernel waits with card detection until the door is closed. I already mentioned it somewhere here, it is just commenting out one line. I am not sure any kernel from me has this enabled but let me know if you want such kernel. With this patch card is detected by kernel when inserted but you still need to mount it by hand since the automatic card mounting feature waits for the 'door closed' event.