ejecting cdrom, vcd, dvd from device button result in umount error report from thunar when thunar volman enabled.

thunar reports umount error:

Given device "/org/freedesktop/Hal/devices/storage_model_TSSTcorp_CDDVDW_TS_L632N" is not a volume or drive.

Unfortunately, the device system:/media/hda (/dev/hda) named 'Eph056A' and currently mounted at /media/Eph056A could not be unmounted. 
Unmounting failed due to the following error:
Device to unmount is not in /media/.hal-mtab so it is not mounted by HAL
Moreover, programs still using the device have been detected. They are listed below. You have to close them or change their working directory before attempting to unmount the device again.
Cannot stat /media/Eph056A: No such file or directory
Cannot stat /media/Eph056A: No such file or directory
Cannot stat /media/Eph056A: No such file or directory