void-variable url-request-method

[Terrence Brannon]

Hello, I am using emacs-23.1 on ubuntu when I type M-x package-list-
packages

I get the error """void-variable url-request-method"""

Here is the stack backtrace -

   1.
      Debugger entered--Lisp error: (void-variable url-request-method)
   2.
        url-http([cl-struct-url "http" nil nil "tromey.com" 80 "/elpa/
archive-contents" nil nil t] (lambda (&rest --cl-rest--) (apply #[...
"���p#��L�       pL�" [G43901 G43900 url-debug retrieval "Synchronous
fetching done (%S)" t] 4] (quote --asynch-buffer--) (quote --retrieval-
done--) --cl-rest--)) (nil))
   3.
        url-retrieve-internal("http://tromey.com/elpa/archive-
contents" (lambda (&rest --cl-rest--) (apply #[... "���p#��L�
pL�" [G43901 G43900 url-debug retrieval "Synchronous fetching done
(%S)" t] 4] (quote --asynch-buffer--) (quote --retrieval-done--) --cl-
rest--)) (nil))
   4.
        url-retrieve("http://tromey.com/elpa/archive-contents"; (lambda
(&rest --cl-rest--) (apply #[... "���p#��L�   pL�" [G43901 G43900 url-
debug retrieval "Synchronous fetching done (%S)" t] 4] (quote --asynch-
buffer--) (quote --retrieval-done--) --cl-rest--)))
   5.
        url-retrieve-synchronously("http://tromey.com/elpa/archive-
contents")
   6.
        (let ((buffer ...)) (save-excursion (set-buffer buffer)
(package-handle-response) (re-search-forward "^$" nil ...) (forward-
char) (delete-region ... ...) (setq buffer-file-name ...)
(let ... ...) (kill-buffer buffer)))
   7.
        package--download-one-archive("archive-contents")
   8.
        package-refresh-contents()
   9.
        package-list-packages()
  10.
        call-interactively(package-list-packages t nil)
  11.
        execute-extended-command(nil)
  12.
        call-interactively(execute-extended-command nil nil)
  13.
        recursive-edit()
  14.
        byte-code("� @�=�!����\"���!�A@)��=�!����\"��!�� ��        !
�\f�d��ed\"
  15.
      V�W�eb��
  16.
      �y�`db��
  17.
      �
  18.
      Zy�`|�)�c�eb���� \"���!���!�����!��� �+ه" [unread-command-
char debugger-args x debugger-buffer noninteractive debugger-batch-max-
lines -1 debug backtrace-debug 4 t backtrace-frame lambda 5 pop-to-
buffer debugger-mode debugger-setup-buffer count-lines 2 "...\n"
message "%s" buffer-string kill-emacs "" nil recursive-edit
middlestart buffer-read-only standard-output] 4)
  19.
        debug(error (file-error "Opening directory" "no such file or
directory" "/var/www/docs/"))
  20.
        file-name-completion(".bac" "/var/www/docs/")
  21.
        comint-dynamic-complete-as-filename()
  22.
        shell-dynamic-complete-filename()
  23.
        run-hook-with-args-until-success(shell-dynamic-complete-
filename)
  24.
        comint-dynamic-complete()
  25.
        call-interactively(comint-dynamic-complete nil nil)