External USB CD/DVD-RW Driver Not Managed

[Adam Tauno Williams <awilliam whitemice org>]

openSUSE 12.1 x86_64 3.1.0-1.2-desktop GNOME3 3.2.1

I have an external USB CD/DVD drive.  This drive has always 'just
worked' in openSUSE 11.3 & 11.4 [GNOME 2.x].  However, under 12.1, the
drive doesn't seem to participate as a removable storage device.  It
does not appear in Nautilus when a disc is inserted or raise any prompt
when a blank disc is inserted.

My user is a member of the "cdrom" group.

lsusb -
Bus 001 Device 011: ID 152e:2507 LG (HLDS) PL-2507 IDE Controller

If I power-on the drive I see the following in dmesg -
[94696.818181] usb 1-2.6: new high speed USB device number 11 using
ehci_hcd
[94696.913434] usb 1-2.6: New USB device found, idVendor=152e,
idProduct=2507
[94696.913439] usb 1-2.6: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[94696.913443] usb 1-2.6: Product: Super Multi Rewriter
[94696.913445] usb 1-2.6: Manufacturer: HLDS Inc.
[94696.913447] usb 1-2.6: SerialNumber: P01080309031040
[94696.914091] scsi13 : usb-storage 1-2.6:1.0
[94697.949911] scsi 13:0:0:0: CD-ROM HL-DT-ST DVD-RAM GSA-E60L 1.00 PQ:
0 ANSI: 0
[94698.033769] sr1: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
xa/form2 cdda tray
[94698.033970] sr 13:0:0:0: Attached scsi CD-ROM sr1

Do I need to twiddle something to get GNOME to manage this device as a
removable media device?