python help modules gtk Segmentation fault (core dumped)

Steps to reproduce:

$ python
Python 2.7.2+ (default, Jan 21 2012, 23:31:34)
[GCC 4.6.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> help()

Welcome to Python 2.7! This is the online help utility.

If this is your first time using Python, you should definitely check out
the tutorial on the Internet at http://docs.python.org/tutorial/.

Enter the name of any module, keyword, or topic to get help on writing
Python programs and using Python modules. To quit this help utility and
return to the interpreter, just type "quit".

To get a list of available modules, keywords, or topics, type "modules",
"keywords", or "topics". Each module also comes with a one-line summary
of what it does; to list the modules whose summaries contain a given word
such as "spam", type "modules spam".

help> modules

Please wait a moment while I gather a list of all available modules...

/usr/lib/python2.7/dist-packages/gobject/constants.py:24: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
  import gobject._gobject

** WARNING **: Trying to register gtype 'GMountMountFlags' as enum when in fact it is of type 'GFlags'

** WARNING **: Trying to register gtype 'GDriveStartFlags' as enum when in fact it is of type 'GFlags'
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
  from gtk import _gtk

** CRITICAL **: pyg_register_boxed: assertion `boxed_type != 0' failed
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: cannot register existing type `GdkDevice'
  from gtk import _gtk
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_type_get_qdata: assertion `node != NULL' failed
  from gtk import _gtk
Segmentation fault (core dumped)

$ dpkg --status python
Package: python
Status: install ok installed
Priority: important
Section: python
Installed-Size: 657
Maintainer: Ubuntu Developers <email address hidden>
Architecture: all
Source: python-defaults
Version: 2.7.2-9ubuntu2
Replaces: python-dev (<< 2.6.5-2)
Provides: python-argparse, python-ctypes, python-email, python-importlib, python-profiler, python-wsgiref
Depends: python2.7 (>= 2.7.2-3~), python-minimal (= 2.7.2-9ubuntu2)
Suggests: python-doc (= 2.7.2-9ubuntu2), python-tk (= 2.7.2-9ubuntu2)
Breaks: python-bz2 (<< 1.1-8), python-csv (<< 1.0-4), python-email (<< 2.5.5-3), update-manager-core (<< 0.200.5-2)
Conflicts: python-central (<< 0.5.5)
Description: interactive high-level object-oriented language (default version)
 Python, the high-level, interactive object oriented language,
 includes an extensive class library with lots of goodies for
 network programming, system administration, sounds and graphics.
 .
 This package is a dependency package, which depends on Debian's default
 Python version (currently v2.7).
Homepage: http://www.python.org/
Original-Maintainer: Matthias Klose <email address hidden>

$ lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04