I have the above mentioned error in my

/var/log/auth.log

file and just try to figure out if this is a harmelss statement. As far as I understand does pmvarrun tells the system how many active session (e.g. logins) a user has on the system.

Full output of auth.log

Jan 24 17:44:42 P835 lightdm: pam_unix(lightdm:session): session opened for user lightdm by (uid=0)
Jan 24 17:44:42 P835 lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0
Jan 24 17:44:49 P835 lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "user"
Jan 24 17:44:51 P835 dbus[1289]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.31" (uid=104 pid=1882 comm="/usr/lib/indicator-datetime/indicator-datetime-ser") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.17" (uid=0 pid=1561 comm="/usr/sbin/console-kit-daemon --no-daemon ")
Jan 24 17:45:04 P835 lightdm: pam_unix(lightdm:session): session closed for user lightdm
Jan 24 17:45:04 P835 lightdm: pam_mount(pam_mount.c:691): received order to close things
Jan 24 17:45:04 P835 lightdm: pam_mount(pam_mount.c:693): No volumes to umount
Jan 24 17:45:04 P835 lightdm: command: 'pmvarrun' '-u' 'user' '-o' '-1' 
Jan 24 17:45:04 P835 lightdm: pam_mount(misc.c:38): set_myuid<pre>: (ruid/rgid=0/0, e=0/0)
Jan 24 17:45:04 P835 lightdm: pam_mount(misc.c:38): set_myuid<post>: (ruid/rgid=0/0, e=0/0)
Jan 24 17:45:04 P835 lightdm: pam_mount(pam_mount.c:438): error reading login count from pmvarrun
Jan 24 17:45:04 P835 lightdm: pam_mount(pam_mount.c:728): pam_mount execution complete
Jan 24 17:45:08 P835 lightdm: pam_unix(lightdm:session): session opened for user user by (uid=0)
Jan 24 17:45:08 P835 lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0
Jan 24 17:45:25 P835 polkitd(authority=local): Registered Authentication Agent for unix-session:/org/freedesktop/ConsoleKit/Session2 (system bus name :1.54 [/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1], object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
Jan 24 17:45:47 P835 dbus[1289]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.59" (uid=1000 pid=4748 comm="/usr/lib/indicator-datetime/indicator-datetime-ser") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.17" (uid=0 pid=1561 comm="/usr/sbin/console-kit-daemon --no-daemon ")

Thanks for any help