Dear Maintainer,
Some time ago (policykit-1 (0.94-1) - Sun, 27 Sep 2009) remove the use of adduser as the changelog register "- Drop dependency on adduser.". Since it returned to the "policykit-1.postinst" script, the file "policykit-1.dirs" define the same home directory that adduser try to create, but it fails because in the installation, this directory is created with root due the "policykit-1.dirs" definition. As "policykit-1.dirs" only have one line with "var/lib/polkit-1/", this bug can be solved removing the file. Thanks,