Here is a bug report and feedback from org-mode author Carsten Dominik.

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On Thu, 12/10/06 03:10 +0100, Leo wrote:

    Dear all,
   
    Starting emacs with "emacs -q -l test test.org". Then press "C-x
    ]". Emacs will freeze.
   
    "test" and "test.org" are attached.
   
    Tested on GNU Emacs 23.0.0.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20)
    of 2006-10-04 running under fedora core 5.