I tried a third usb mass storage device, but ext3 formatted this time and without partition(/dev/sda)... no issue to mount it after ejecting without unpluggin it.
-- Unable to re-mount again an usb flash key. https://launchpad.net/bugs/55315 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
