Can't mount "packet writing" UDF formated media as user

This is something I already did on Gutsy, but on a new Intrepid 64bits machine I can't mount an udf media as "packet writing" if not root. I believe I setup all what has to be setup but the drive is not even shown in nautilus (see attachement).

- Added "DEVICES="/dev/scd0"" to /etc/default/udftools
- sudo mkdir /media/packetwriting
- sudo chgrp plugdev /media/packetwriting # My username is already in plugdev group
- sudo chmod g+rwx /media/packetwriting
- sudo chgrp plugdev /dev/pktcdvd/0
- sudo chmod g+rw /dev/pktcdvd/0
- Added this line to /etc/fstab:
    /dev/pktcdvd/0 /media/packetwriting udf rw,user,noauto,noatime,utf8 0 0
- Removed Nautilus automounting in /apps/nautilus/preferences/media_automount
- Prepared a dvdrw :
    - sudo dvd+rw-format -force /dev/pktcdvd/0
    - sudo growisofs -Z /dev/pktcdvd/0=/dev/zero
    - sudo mkudffs --udfrev=0x0150 --spartable=2 --media-type=dvdrw --utf8 /media/packetwriting
- reboot (I could use sudo invoke-rc.d udftools start, but just to be sure)
- mounted packet writing in Nauilus as root
- sudo chgrp plugdev /media/packetwriting
- sudo chmod g+rwx /media/packetwriting
- unmounted drive as root

=> In Nautilus, Computer does not show me the packet drives. You can see a screenshot of what I was seeing in Gutsy at http://www.thierryb.net/site/Gravure-CD-DVD-par-paquets-ubuntu-udftools.html?artpage=3&lang=en (I had 2 drives on the previous computer). But now as you can see on the attachment they do not appear before I mount them as root, then I can use them.

udftools 1.0.0b3-14
nautilus 1:2.24.1-0ubuntu1