Every so often Fedora stops letting me eject CDs: $ eject /dev/cdrom $ eject: unable to eject, last error: Invalid argumentWhy does this happen? I've seen both on my desktop as well as my laptop, and I saw it under FC3 and well as FC4. Nothing seems to solve it except straightening out a paperclip and ejecting the disk manually and rebooting. As far as HCI design goes, it is a worthless error message.