Bug: aquamacs hangs when scrolling column view [7.7 (release_7.7.104.g8425)]

[Skip Collins <skip.collins@gmail.com>]

When I move the scroll bar down in column view, Aquamacs typically
hangs. This is repeatable with the following minimal.emacs file:

--8<---------------cut here---------------start------------->8---
(add-to-list 'load-path (expand-file-name "~/Documents/elisp/org-mode/lisp"))
(add-to-list 'auto-mode-alist '("\\.\\(org\\  |org_archive\\|txt\\)$"
. org-mode))
(setq org-agenda-files '("/tmp/test.org"))
(require 'org-install)
(require 'org-habit)

(global-set-key "\C-cl" 'org-store-link)
(global-set-key "\C-ca" 'org-agenda)
(global-set-key "\C-cb" 'org-iswitchb)
--8<---------------cut here---------------end--------------->8---

orgbug.org:

--8<---------------cut here---------------start------------->8---
#
* foo
* bar
* baz
* qux
* foo
* bar
* baz
* qux
* foo
* bar
* baz
* qux
* foo
* bar
* baz
* qux
--8<---------------cut here---------------end--------------->8---

/Applications/Aquamacs.app/Contents/MacOS/Aquamacs -Q -l
~/minimal.emacs ~/orgbug.org

Emacs  : GNU Emacs 24.0.50.3 (i386-apple-darwin10.8.0, NS apple-appkit-1038.36)
 of 2011-08-02 on colli
Package: Org-mode version 7.7 (release_7.7.104.g8425)

current state:
==============
(setq
 org-export-preprocess-before-selecting-backend-code-hook
'(org-beamer-select-beamer-code)
 org-tab-first-hook '(org-hide-block-toggle-maybe
		      org-src-native-tab-command-maybe
		      org-babel-hide-result-toggle-maybe)
 org-speed-command-hook '(org-speed-command-default-hook
			  org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-export-preprocess-before-normalizing-links-hook
'(org-remove-file-link-modifiers)
 org-confirm-shell-link-function 'yes-or-no-p
 org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc
			       org-beamer-auto-fragile-frames
			       org-beamer-place-default-actions-for-lists)
 org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
 org-support-shift-select t
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
		     org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-export-blocks-postblock-hook '(org-exp-res/src-name-cleanup)
 org-mode-hook '(#[nil "\300\301\302\303\304$\207"
		   [org-add-hook change-major-mode-hook org-show-block-all
		    append local]
		   5]
		 #[nil "\300\301\302\303\304$\207"
		   [org-add-hook change-major-mode-hook
		    org-babel-show-result-all append local]
		   5]
		 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
			  org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
		  org-cycle-show-empty-lines
		  org-optimize-window-after-visibility-change)
 org-export-latex-format-toc-function 'org-export-latex-format-toc-default
 org-export-blocks '((src org-babel-exp-src-block nil)
		     (comment org-export-blocks-format-comment t)
		     (ditaa org-export-blocks-format-ditaa nil)
		     (dot org-export-blocks-format-dot nil))
 org-export-first-hook '(org-beamer-initialize-open-trackers)
 org-export-interblocks '((lob org-babel-exp-lob-one-liners)
			  (src org-babel-exp-inline-src-blocks))
 org-confirm-elisp-link-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-agenda-files '("/tmp/test.org")
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 )