When I insert a CD in my drive it gets mounted and it´s displayed with the KDE
media ioslave.
But when I remove the CD from the drive the entry is still there, so the CD
wasn´t unmounted.
I see the following messages in the messages log:

Oct 19 13:37:15 r098088 hal-subfs-mount[9304]: SYMLINKS::
disk/by-path/pci-0000:00:12.0-ide-0:1 dvdrecorder cdrom dvd cdrecorder 
Oct 19 13:37:15 r098088 hal-subfs-mount[9304]: MOUNT_POINT:: /media/dvdrecorder
Oct 19 13:37:15 r098088 hal-subfs-mount[9304]: MOUNTPOINT:: /media/dvdrecorder
Oct 19 13:37:15 r098088 kernel: subfs 0.9
Oct 19 13:37:15 r098088 hal-subfs-mount[9304]: Collected mount options and
Called(0) /bin/mount -t subfs -o
fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 /dev/hdb "/media/dvdrecorder" 
Oct 19 13:37:15 r098088 kernel: ISO 9660 Extensions: Microsoft Joliet Level 3
Oct 19 13:37:15 r098088 kernel: ISOFS: changing to secondary root
Oct 19 13:37:15 r098088 udevd[4370]: get_netlink_msg: no ACTION in payload
found, skip event 'mount'
Oct 19 13:37:18 r098088 udevd[4370]: get_netlink_msg: no ACTION in payload
found, skip event 'umount'
Oct 19 13:37:19 r098088 kernel: ISO 9660 Extensions: Microsoft Joliet Level 3
Oct 19 13:37:19 r098088 kernel: ISOFS: changing to secondary root
Oct 19 13:37:19 r098088 udevd[4370]: get_netlink_msg: no ACTION in payload
found, skip event 'mount'
Oct 19 13:37:22 r098088 udevd[4370]: get_netlink_msg: no ACTION in payload
found, skip event 'umount'
Oct 19 13:37:25 r098088 kernel: ISO 9660 Extensions: Microsoft Joliet Level 3
Oct 19 13:37:25 r098088 kernel: ISOFS: changing to secondary root
Oct 19 13:37:25 r098088 udevd[4370]: get_netlink_msg: no ACTION in payload
found, skip event 'mount'
Oct 19 13:37:28 r098088 udevd[4370]: get_netlink_msg: no ACTION in payload
found, skip event 'umount'
Oct 19 13:37:36 r098088 hal-subfs-mount[9358]: By hald-subfs-mount created link
/media/Mails got removed.

The link in /media was indeed removed. When I click on the CD icon I see an
empty folder with the address "media:/hdb"