On Wed, Mar 23, 2011 at 07:18:45PM -0400, Bernd Weiss wrote:
> I am currently preparing a Beamer presentation and I would like to
> include \institute[short]{long} into my org-file;

 This works for me:

#+BEAMER_HEADER_EXTRA:  \institute{My insitute}

 Cheers,
 Miklós
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