I have this same problem (mint 13 xfce 4.1). It is very annoying. Every time I eject a drive I get two warning dialogs. Is there a better way to eject a drive?
EDIT: This post
speculates it might be a problem with XFCE. Another poster uses the terminal or diskutility
to unmount without warnings/errors.Another thread
links to a script that emulates the missing "safely remove drive" option.
There appears to be an application called "ejecter
" that unmounts drives, but I have not tried it and don't know if it will give the same errors.
And that's as far as I got.