--- systemd-198/units/systemd-logind.service.in~	2012-07-19 12:46:25.831148364 +0200
+++ systemd-198/units/systemd-logind.service.in	2013-03-24 16:39:38.798689883 +0100
@@ -21,3 +21,7 @@
 # Increase the default a bit in order to allow many simultaneous logins since
 # we keep one fd open per session.
 LimitNOFILE=@HIGH_RLIMIT_NOFILE@
+
+# Run as group 'proc' to ensure access to /proc when
+# it is mounted with hidepid=1|2 option
+Group=17