Option to kill media users from eject/unmount error dialog

(This is a wishlist item; the entry form doesn't apparently let me indicate that
in a standard fashion.)

Sometimes CDs get stuck inside without the novice user being able to do much
about it. It'd be an improvement if Nautilus offered, when unmount/eject fails,
a list of all processes using said mount and an option to kill them (if they're
killable by the user). As the list might take a while to generate if there's no
smarter way to do it than fuser every file and directory (dunno), perhaps the
list itself might be hidden by default. This might sometimes have unintended
consequences, but would be an overall improvement to the frustration of the end
user.