Since the last comment on this is before 13.04, I'll just add that this exact issue still remains on a fresh install of Raring. pdecat's workaround echo 0 | sudo tee /sys/module/hid_apple/parameters/iso_layout works.
Since the last comment on this is before 13.04, I'll just add that this exact issue still remains on a fresh install of Raring. pdecat's workaround hid_apple/ parameters/ iso_layout
echo 0 | sudo tee /sys/module/
works.