[O] Double Quotation not translated in sections for LaTeX

[Xin Shi]

Hello,

I'm using the org-mode 7.5 in Emacs 23.3.

I noticed this lines in org:

** ``Internal'' and "External" Example

   ``Internal'' and "External" Examples in paragraph

will result in tex:

\section{``Internal'' and "External" Example}
\label{sec-1_1}

   ``Internal'' and ``External'' Examples in paragraph

One can see that the " quotation in the heading line is not translated
properly into TeX.

Is this a bug?

Thanks!

Xin