I would like to confirm what beni wrote on 2013-05-04.
I've just installed 13.04 on a zenbook with only USB 3.0 ports. "Safely Removing" USB harddisks or memory results in immediate re-mounting. Only clicking on the arrow in a Nautilus (or unmounting in a terminal "umount /media/...") will allow me to safely remove my disk.
My previous computer with 12.04 did not have USB 3.0 ports and I didn't experience this problem.
I would like to confirm what beni wrote on 2013-05-04.
I've just installed 13.04 on a zenbook with only USB 3.0 ports. "Safely Removing" USB harddisks or memory results in immediate re-mounting. Only clicking on the arrow in a Nautilus (or unmounting in a terminal "umount /media/...") will allow me to safely remove my disk.
My previous computer with 12.04 did not have USB 3.0 ports and I didn't experience this problem.