[Orgmode] orgstruct-mode keybindings don't work

[David O'Toole]

I'm using orgstruct-mode in my elisp files (i.e. turn-on-orgstruct is
in the emacs-lisp-mode-hook.)

Local value of outline regexp is: ";;;\\(;* [^
]\\|###autoload\\)\\|("

None of the orgstruct commands/keybindings work;
C-h k shows that M-right has the org-hijacker command bound to it, but
executing it just does the normal M-right action (which is
forward-word on my emacs)
No repositioning of point (i.e. further into the headline) helps at all.

Trying M-up or M-down gives "this key has no function outside
structure elements" even when in a headline.

Am I doing something wrong?

M-x emacs-version gives:
GNU Emacs 23.0.50.1 (i686-pc-linux-gnu, X toolkit) of 2007-12-10 on pod