bug#18956: Reporting a bug with Trac not possible

Hi!

This appeared when trying to report a bug for GNU parted using http://parted.alioth.debian.org/cgi-bin/trac.cgi/newticket :
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Oops...

Trac detected an internal error: No module named _md5

Traceback (most recent call last):
  File "/var/lib/gforge/chroot/home/groups/parted/cgi-bin/trac.cgi", line 19, in <module>
    from trac.web import cgi_frontend
  File "/srv/alioth.debian.org/chroot/home/groups/parted/srv/lib/python2.5/site-packages/trac/web/__init__.py", line 1, in <module>
    from trac.web.api import *
  File "/srv/alioth.debian.org/chroot/home/groups/parted/srv/lib/python2.5/site-packages/trac/web/api.py", line 27, in <module>
    from trac.util import get_last_traceback
  File "/srv/alioth.debian.org/chroot/home/groups/parted/srv/lib/python2.5/site-packages/trac/util/__init__.py", line 21, in <module>
    import md5
  File "/var/lib/gforge/chroot/home/groups/parted/srv/lib/python2.5/md5.py", line 6, in <module>
    from hashlib import md5
  File "/var/lib/gforge/chroot/home/groups/parted/srv/lib/python2.5/hashlib.py", line 104, in <module>
    md5 = __get_builtin_constructor('md5')
  File "/var/lib/gforge/chroot/home/groups/parted/srv/lib/python2.5/hashlib.py", line 31, in __get_builtin_constructor
    import _md5
ImportError: No module named _md5
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