/usr/lib/pyshared/python2.6/unshare.so is in python-unshare 0.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/pyshared/python2.6/../../python2.6/dist-packages/unshare.so
/usr/lib/pyshared/python2.6/../../python2.6/dist-packages/unshare.so