Can't see marmalade repo on emacs 24 on OSX 10.6.8

Question

I'm trying to set up emacs 24 to use with clojure on osx. I've installed emacs 24 from emacsformacosx.com, and I've added the following code to ~/.emacs.d/init.el:

(require 'package)
(add-to-list 'package-archives
             '("marmalade" . "http://marmalade-repo.org/packages/"))
(package-initialize)

(when (not package-archive-contents)
  (package-refresh-contents))

;; Add in your own as you wish:
(defvar my-packages '(starter-kit starter-kit-lisp)
  "A list of packages to ensure are installed at launch.")

(dolist (p my-packages)
  (when (not (package-installed-p p))
    (package-install p)))

However when I do M-x package-refresh-contents, and package-install, clojure-mode and the other marmalade packages don't show up. The starter kit must be installed since ido-mode works, so I'm not sure what's happening. I can go to ~/.emacs.d/elpa/archive/marmalade and see that the packages are there. Any ideas what I'm doing wrong?