This seems to be an upgrade issue of "python-setuptools" from 0.6c9-0ubuntu5 to 0.6.8-1ubuntu1. A fresh install of python-setuptools doesn't show this problem.
So a workaround is to remove python-setuptools and install it again.
This seems to be an upgrade issue of "python-setuptools" from 0.6c9-0ubuntu5 to 0.6.8-1ubuntu1.
A fresh install of python-setuptools doesn't show this problem.
So a workaround is to remove python-setuptools and install it again.