Platform: Ubuntu 10.0
          GNU Emacs 23.1.1


Offending commit (found with git bisect):

sb@aa1steinar:~/git/gnus$ git bisect good
15ceddb656d3650b6626205b58629b68f67a86c3 is the first bad commit
commit 15ceddb656d3650b6626205b58629b68f67a86c3
Author: Lars Ingebrigtsen <larsi@gnus.org>
Date:   Wed Feb 1 20:35:34 2012 +0100

    Redefine `delete-directory' on Emacs 22 and XEmacs
    
    * gnus-compat.el: Redefine `delete-directory' to provide recursive
    deletion unless already defined.

:040000 040000 18a8200b49ff2ab3b61147f7cb13e8e61eff47c9 c3d857de599cade1098d29888c55e4b0c9cdf93a M	lisp


Stack trace: