Traceback (most recent call last):
  File "/usr/bin/bittorrent-curses", line 18, in ?
    from BitTorrent.translation import _
  File "/usr/lib/python2.3/site-packages/BitTorrent/__init__.py", line 72, in ?
    from BitTorrent.platform import get_temp_subdir, get_home_dir, get_dot_dir, is_frozen_exe
  File "/usr/lib/python2.3/site-packages/BitTorrent/platform.py", line 255, in ?
    from BitTorrent.defer import ThreadedDeferred
  File "/usr/lib/python2.3/site-packages/BitTorrent/defer.py", line 16, in ?
    from twisted.internet import defer
  File "/usr/lib/python2.3/site-packages/twisted/__init__.py", line 22, in ?
    raise ImportError("you need zope.interface installed "
ImportError: you need zope.interface installed (http://zope.org/Products/ZopeInterface/)