Someone

16:19:52.456 [I] hald_dbus.c:3085: OK for method 'Mount' with signature 'ssas' on interface 'org.freedesktop.Hal.Device.Volume' for UDI '/org/freedesktop/Hal/devices/volume_label_EXPANSION' and execpath 'hal-storage-mount'
16:19:52.456 [I] hald_dbus.c:2613: no need to enqueue
Run started hal-storage-mount (0) (1)
!  full path is '/usr/local/libexec/hal-storage-mount', program_dir is '/usr/local/libexec'
16:19:52.471 [I] hald_dbus.c:3195: 1631: Got a connection
16:19:52.471 [I] hald_dbus.c:3196: dbus_connection_get_is_connected = 1
device         = /dev/acd0
invoked by uid = 1001
invoked by pid = -1
/etc/fstab: device /dev/label/swap -> /dev/label/swap
/etc/fstab: device /dev/label/root -> /dev/label/root
/etc/fstab: device /dev/label/home -> /dev/label/home
/etc/fstab: device /dev/label/usr -> /dev/label/usr
/etc/fstab: device /dev/label/var -> /dev/label/var
/etc/fstab: device /dev/label/space -> /dev/label/space
/etc/fstab: device procfs -> procfs
mount_point    = ''
mount_fstype   = ''
mount_options  = ''
trying dir /media/EXPANSION
allowed_options[0] = 'ro'
allowed_options[1] = 'sync'
allowed_options[2] = 'noatime'
allowed_options[3] = 'noexec'
allowed_options[4] = 'extatt'
allowed_options[5] = 'gens'
allowed_options[6] = 'nojoliet'
allowed_options[7] = 'norrip'
allowed_options[8] = 'nostrictjoliet'
using privilege hal-storage-removable-mount for uid 1001, pid -1
cannot lookup privilege
16:19:52.493 [I] hald_dbus.c:3173: Client to local_server was disconnected
16:19:52.493 [I] hald_dbus.c:3183: unregistered
/usr/local/libexec/hal-storage-mount exited
16:19:52.494 [I] hald_dbus.c:2635: No more methods in queue
16:19:52.494 [I] hald_dbus.c:2680: failed with 'org.freedesktop.Hal.Device.UnknownError' 'An unexpected error occured'




--- lshal output of the referenced volume udi ---

udi = '/org/freedesktop/Hal/devices/volume_label_EXPANSION'
  volume.mount.valid_options = {'ro', 'sync', 'noatime', 'noexec', 'extatt', 'gens', 'nojoliet', 'norrip', 'nostrictjoliet'}$  org.freedesktop.Hal.Device.Volume.method_execpaths = {'hal-storage-mount', 'hal-system-storage-unmount', 'hal-system-stora$  org.freedesktop.Hal.Device.Volume.method_signatures = {'ssas', 'as', 'as'} (string list)
  org.freedesktop.Hal.Device.Volume.method_names = {'Mount', 'Unmount', 'Eject'} (string list)
  info.interfaces = {'org.freedesktop.Hal.Device.Volume'} (string list)
  block.storage_device = '/org/freedesktop/Hal/devices/storage_model_SONY_CD_ROM_CDU5215'  (string)
  info.product = 'EXPANSION'  (string)
  info.udi = '/org/freedesktop/Hal/devices/volume_label_EXPANSION'  (string)
  block.is_volume = true  (bool)
  volume.mount_point = ''  (string)
  volume.is_mounted_read_only = false  (bool)
  volume.is_mounted = false  (bool)
  volume.num_blocks = 262790  (0x40286)  (uint64)
  volume.size = 538193920  (0x20143000)  (uint64)
  volume.block_size = 2048  (0x800)  (uint64)
  volume.uuid = ''  (string)
  volume.label = 'EXPANSION'  (string)
  volume.fstype = 'iso9660'  (string)
  volume.fsusage = 'filesystem'  (string)
  volume.ignore = false  (bool)
  volume.is_partition = false  (bool)
  volume.is_disc = true  (bool)
  volume.disc.capacity = 538193920  (0x20143000)  (uint64)
  volume.disc.type = 'cd_rom'  (string)
  volume.disc.is_rewritable = false  (bool)
  volume.disc.is_blank = false  (bool)
  volume.disc.is_appendable = false  (bool)
  volume.disc.is_videodvd = false  (bool)
  volume.disc.is_svcd = false  (bool)
  volume.disc.is_vcd = false  (bool)
  volume.disc.has_data = true  (bool)
  volume.disc.has_audio = false  (bool)
  block.minor = 94  (0x5e)  (int)
  block.major = 0  (0x0)  (int)
  block.device = '/dev/acd0'  (string)
  info.category = 'volume.disc'  (string)
  info.bus = 'block'  (string)
  info.capabilities = {'block', 'volume', 'volume.disc'} (string list)
  info.parent = '/org/freedesktop/Hal/devices/storage_model_SONY_CD_ROM_CDU5215'  (string)