Same problem on 14.04 64bit. Found somewhere this workaround:
gvfs-mount --eject "file:///media/volume_name"
and it works. df -h shows no drive mounted, but Unity launcher isn't aware of that. Still, safe to remove. I didn't had this problem in my previous 12.04/13.10 installations on the same machine.
Same problem on 14.04 64bit. Found somewhere this workaround:
gvfs-mount --eject "file:/ //media/ volume_ name"
and it works. df -h shows no drive mounted, but Unity launcher isn't aware of that. Still, safe to remove. I didn't had this problem in my previous 12.04/13.10 installations on the same machine.