Traceback (most recent call last):
  File "/usr/bin/update-manager", line 28, in <module>
    import gtk
  File "/var/lib/python-support/python2.5/gtk-2.0/gtk/__init__.py", line 48, in <module>
    from gtk import _gtk
  File "/usr/lib/python2.5/site-packages/cairo/__init__.py", line 1, in <module>
    from _cairo import *
ImportError: /usr/lib/python2.5/site-packages/cairo/_cairo.so: undefined symbol: cairo_clip_extents