/usr/lib/python2.6/dist-packages/etk/docking/docklayout.py is in python-etk.docking 0.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/etk/docking/../../../../../share/pyshared/etk/docking/docklayout.py