Probably related:
https://bugs.launchpad.net/ubuntu/+source/zope.interface/+bug/688335
could you try removing the __init__.py* from your /usr/lib/python2.6/dist-packages/zope directory and verify the problem vanishes?
Probably related:
https:/ /bugs.launchpad .net/ubuntu/ +source/ zope.interface/ +bug/688335
could you try removing the __init__.py* from your /usr/lib/ python2. 6/dist- packages/ zope directory and verify the problem vanishes?