--- ConsoleKit-0.2.10/src/ck-manager.c.orig	2008-05-08 16:30:52.096394000 +0800
+++ ConsoleKit-0.2.10/src/ck-manager.c	2008-05-08 17:11:32.741068000 +0800
@@ -734,10 +734,19 @@
                     guint      pid)
 {
         char *cookie;
-
-        /* FIXME: need a better way to get the cookie */
-
-        cookie = ck_unix_pid_get_env (pid, "XDG_SESSION_COOKIE");
+        guint tmp_pid = pid;
+        
+        /* In some cases, the cookie enviroment variable is possibly 
+         * lost when forking a new process. So if current process 
+         * cookie is NULL, try to check its parent process until 
+         * the toppest process. 
+         */
+        while (tmp_pid != -1 && tmp_pid != 1) {
+                cookie = ck_unix_pid_get_env (tmp_pid, "XDG_SESSION_COOKIE");
+                if (cookie != NULL)
+                        break;
+                tmp_pid = ck_unix_pid_get_ppid (tmp_pid);
+        }
 
         return cookie;
 }