Same behaviour for me on my ASUS M2NPV-VM motherboard. Using safe remove remounts the usb key a few seconds after the action.
dmesg says: [ 1262.979951] WARNING! power/level is deprecated; use power/control instead hummmm, not really what we want :-( -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/608508 Title: usb stick will not stay unmounted with safely remove -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs