--- a/.emacs-my	Tue Dec 17 16:46:36 2013 +0200
+++ b/.emacs-my	Thu Dec 19 15:18:21 2013 +0200
@@ -803,7 +803,8 @@
 (global-set-key [?\C-x right] 'next-buffer)
 (global-set-key [?\C-x left]  'previous-buffer)
 (global-set-key (kbd "C-x C-k") 'kill-this-buffer)
-(global-set-key [?\C-x down] 'kill-this-buffer)
+(global-set-key [?\C-x up] 'kill-this-buffer)
+(global-set-key [?\C-x down] 'other-window)
 
 (iswitchb-mode 1)
 (setq iswitchb-regexp t)