Public bug reported:

Sadly, I have no idea exactly how I managed to get such a state of HAL database.
When I try to click on the icon on my desktop which represents the wretched 
thing
(a Canon camera formatted CF card), exo-eject just crashes in main:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f32c36fc7a0 (LWP 11140)]
0x00000000004033f5 in main (argc=1, argv=0x7fffcb72aa48) at main.c:338
338     main.c: No such file or directory.
        in main.c
(gdb) bt
#0  0x00000000004033f5 in main (argc=1, argv=0x7fffcb72aa48) at main.c:338
(gdb) dir ~/compile/libexo/exo-0.3.4/exo-mount
Source directories searched: 
/home/raa/compile/libexo/exo-0.3.4/exo-mount:$cdir:$cwd
(gdb) l
333               else
334                 message = g_strdup_printf (_("Failed to mount \"%s\""), 
name);
335     
336               /* popup an error message dialog */
337               dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL, 
GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s.", message);
338               gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG 
(dialog), "%s.", err->message);
339               gtk_dialog_run (GTK_DIALOG (dialog));
340               gtk_widget_destroy (dialog);
341               g_free (message);
342             }
(gdb) p err
$1 = (GError *) 0x0
(gdb) quit

The hal-device output for the UDI:

$ hal-device 
0: udi = '/org/freedesktop/Hal/devices/volume_uuid_220D_41BE'
  block.device = '/dev/sdc1'  (string)
  info.capabilities = { 'volume', 'block' } (string list)
  volume.partition.media_size = 260047360  (0xf800200)  (uint64)
  volume.partition.scheme = 'mbr'  (string)
  block.major = 8  (0x8)  (int)
  volume.partition.type = '0x06'  (string)
  block.minor = 33  (0x21)  (int)
  volume.partition.label = ''  (string)
  block.is_volume = true  (bool)
  volume.partition.uuid = ''  (string)
  linux.hotplug_type = 3  (0x3)  (int)
  volume.partition.flags = {  } (string list)
  info.product = 'CANON_DC'  (string)
  volume.ignore = false  (bool)
  info.udi = '/org/freedesktop/Hal/devices/volume_uuid_220D_41BE'  (string)
  org.freedesktop.Hal.Device.Volume.method_names = { 'Mount', 'Unmount', 
'Eject' } (string list)
  org.freedesktop.Hal.Device.Volume.method_signatures = { 'ssas', 'as', 'as' } 
(string list)
  storage.model = ''  (string)
  org.freedesktop.Hal.Device.Volume.method_argnames = { 'mount_point fstype 
extra_options', 'extra_options', 'extra_options' } (string list)
  org.freedesktop.Hal.Device.Volume.method_execpaths = { 'hal-storage-mount', 
'hal-storage-unmount', 'hal-storage-eject' } (string list)
  info.interfaces = { 'org.freedesktop.Hal.Device.Volume' } (string list)
  volume.mount.valid_options = { 'ro', 'sync', 'dirsync', 'noatime', 
'nodiratime', 'noexec', 'quiet', 'remount', 'exec', 'utf8', 'shortname=', 
'codepage=', 'iocharset=', 'umask=', 'dmask=', 'fmask=', 'uid=', 'flush' } 
(string list)
  volume.unmount.valid_options = { 'lazy' } (string list)
  block.storage_device = 
'/org/freedesktop/Hal/devices/storage_serial_Generic_USB_Storage_CFC_20020723160609130_0_1'
  (string)
  volume.fstype = 'vfat'  (string)
  volume.fsusage = 'filesystem'  (string)
  volume.fsversion = 'FAT16'  (string)
  volume.uuid = '220D-41BE'  (string)
  volume.label = 'CANON_DC'  (string)
  volume.mount_point = ''  (string)
  volume.is_mounted = false  (bool)
  linux.sysfs_path = 
'/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:1/block/sdc/sdc1'
  (string)
  volume.is_mounted_read_only = false  (bool)
  info.parent = 
'/org/freedesktop/Hal/devices/storage_serial_Generic_USB_Storage_CFC_20020723160609130_0_1'
  (string)
  volume.linux.is_device_mapper = false  (bool)
  volume.is_disc = false  (bool)
  volume.is_partition = true  (bool)
  volume.partition.number = 1  (0x1)  (int)
  volume.block_size = 512  (0x200)  (int)
  volume.num_blocks = 507360  (0x7bde0)  (int)
  volume.size = 259768320  (0xf7bc000)  (uint64)
  info.category = 'volume'  (string)
  volume.partition.start = 16384  (0x4000)  (uint64)

** Affects: exo (Ubuntu)
     Importance: Undecided
         Status: New

-- 
exo-eject crashes trying to eject a strangely stuck HAL device
https://bugs.launchpad.net/bugs/264439
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