/usr/share/man/man1/electricsheep-preferences.1.gz is in electricsheep 2.7~b12+svn20091224-1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/electricsheep.1.gz
/usr/share/man/man1/electricsheep.1.gz