/usr/lib/pyshared/python2.7/mx/Queue/mxQueue/mxQueue.so is in python-egenix-mxqueue 3.2.1-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/pyshared/python2.7/mx/Queue/mxQueue/../../../../../python2.7/dist-packages/mx/Queue/mxQueue/mxQueue.so