Comment 6 for bug 47320

This affects Ubuntu Mobile as well. Ubuntu Mobile uses unionfs to merge a squashfs image and an ext3 partition. /proc/<pid>/exe points to /squashmnt/path/to/exe rather than /path/to/exe, so start-stop-daemon --exec never finds a running process.

In Ubuntu Mobile the problem can be worked around by 'ln -s / /squashmnt', yuck.