the context menu of a cd drive in computer has two menu items, Mount and Eject, both of which do nothing but show an annoying error dialog that tells me there is no medium in the drive. If we don't make eject work on empty drives, we should disable or hide these menuitems when the drive is empty.
The gdu volume monitor should probably set can_eject to FALSE in this case.
Should be fixed in gvfs-1.4.0-5.fc12. I'll perform some more tests on Monday and will commit if everything works as expected.