Same issue here with Feisty using LaCie F.A. Porsche USB HD. It only has one XFS partition on it and yet I see the same errors described above. The only way to unumout is to run "sudo umount" on the partition. Running the command as a normal user gives "umount: /media/disk is not in the fstab (and you are not root)". Using the graphical interface to eject gives the error followed by instant remount described above.
Same issue here with Feisty using LaCie F.A. Porsche USB HD. It only has one XFS partition on it and yet I see the same errors described above. The only way to unumout is to run "sudo umount" on the partition. Running the command as a normal user gives "umount: /media/disk is not in the fstab (and you are not root)". Using the graphical interface to eject gives the error followed by instant remount described above.