Thanks to Ubuntu maintainers for hacking some of this,
http://launchpad.net/ubuntu/+archive/primary/+files/systemd_204-0ubuntu1.debian.tar.gz

--- src/login/logind.c
+++ src/login/logind.c
@@ -1371,9 +1371,15 @@
         Seat *seat;
         Session *session;
         User *user;
+        Iterator i;
 
         assert(m);
 
+        /* clean up empty sessions when not running under systemd */
+        HASHMAP_FOREACH(session, m->session_cgroups, i)
+                if (session_get_state(session) == SESSION_CLOSING)
+                        session_add_to_gc_queue(session);
+
         while ((seat = m->seat_gc_queue)) {
                 LIST_REMOVE(Seat, gc_queue, m->seat_gc_queue, seat);
                 seat->in_gc_queue = false;
--- src/login/logind-session.c
+++ src/login/logind-session.c
@@ -642,7 +642,7 @@
 
                         r = manager_get_session_by_pid(s->manager, s->leader, &t);
                         if (r > 0 && t == s) {
-                                kill(s->leader, SIGTERM); /* for normal processes */
+                                /*kill(s->leader, SIGTERM); */ /* for normal processes */
                                 kill(s->leader, SIGHUP);  /* for shells */
                                 kill(s->leader, SIGCONT); /* in case they are stopped */
                         }
--- src/login/org.freedesktop.login1.service
+++ src/login/org.freedesktop.login1.service
@@ -7,6 +7,6 @@
 
 [D-BUS Service]
 Name=org.freedesktop.login1
-Exec=/bin/false
+Exec=/lib/systemd/systemd-logind
 User=root
 SystemdService=dbus-org.freedesktop.login1.service