/usr/lib/python2.7/dist-packages/shinken/bin/shinken-arbiter.py is in shinken-common 1.4-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/shinken/bin/shinken-arbiter
/usr/lib/python2.7/dist-packages/shinken/bin/shinken-arbiter