Using git master 2bd95b6b of Fri Sep 28 10:05:20 2012, if I tangle this with org-babel-tangle:
#+BEGIN_SRC sh :tangle file.sh a #+END_SRC then file.sh would contain a blank line at the top, which I would not have expected to be there. Myles Emacs : GNU Emacs 24.2.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.4.4) of 2012-08-28 on shaun Package: Org-mode version 7.9.1 (release_7.9.1-401-g2bd95b @ /home/myles/.emacs.d/plugins/org-mode/lisp/)