Comment 16 for bug 81239

just wanted to say that this happened to me just now. i shared the dvd drive so i could copy the contents to another comp over the network and it wouldnt let me eject the disk. doing "sudo umount /media/cdrom0" and "sudo umount -f /media/cdrom0" let to "device is busy" erros. tried "sudo lsof | grep /media/cdrom0" from above and it told me smbd was the problem app/daemon. did a kill -9 680 (for me) and then i could eject the dvd.