--- a/.emacs-my	Fri Nov 09 16:15:06 2012 +0200
+++ b/.emacs-my	Fri Nov 09 16:20:22 2012 +0200
@@ -1873,8 +1873,10 @@
 (setq ediff-window-setup-function 'ediff-setup-windows-plain)
 (setq ediff-split-window-function 'split-window-vertically)
 
-(defun my-diff-auto-refine-mode-on () (diff-auto-refine-mode 1))
-(add-hook 'diff-mode-hook 'my-diff-auto-refine-mode-on)
+;; Disable: sometimes it take a long time to process large hunks.
+;; Use C-c C-b on hunk by own.
+;; (defun my-diff-auto-refine-mode-on () (diff-auto-refine-mode 1))
+;; (add-hook 'diff-mode-hook 'my-diff-auto-refine-mode-on)
 
 (when window-system
   (eval-after-load 'diff-mode