I wonder if I should try a completely fresh install? Keeping the Home
directory on a separate partition is indispensably useful; but it seems
to keep some system settings as well as all my data. For instance I've
just loaded Maverick Meerkat alpha 3 on my test machine; since I
discovered AWN I've almost completely dispensed with the default Gnome
task bars, but AWN didn't come back automatically and I was briefly at a
loss for how to do anything, even to shut down! Perhaps something I've
done that persists in Home prevents the repository Wacom drivers (which
I notice are installed by default) from working? I could afford to wipe
Home on that machine, perhaps that's the next thing I should try.