--- wallpapoz-0.4.1-svn92_trunk/share/wallpapoz/lib/wallpapoz_system.py.kill_multi	2010-03-18 01:01:50.000000000 +0900
+++ wallpapoz-0.4.1-svn92_trunk/share/wallpapoz/lib/wallpapoz_system.py	2010-03-18 01:03:38.000000000 +0900
@@ -189,3 +189,17 @@
     print "os.execvp failed, exiting..."
     sys.exit(1)
 
+  def prevent_multiple_start(self):
+    cpid = os.getpid()
+    cid = os.getuid()
+
+    wallpapoz_cmd = "pgrep -U %i -f daemon_wallpapoz" %cid
+    python_cmd = "pgrep -U %i -f python" %cid
+
+    wallpapoz_id_list = os.popen(wallpapoz_cmd).read().splitlines()
+    python_id_list = os.popen(python_cmd).read().splitlines()
+
+    for id_list in wallpapoz_id_list:
+      if ( id_list in python_id_list ) and ( int(id_list) != cpid) :
+        os.kill(int(id_list), signal.SIGTERM)
+
--- wallpapoz-0.4.1-svn92_trunk/src/daemon_wallpapoz.kill_multi	2010-03-18 01:01:50.000000000 +0900
+++ wallpapoz-0.4.1-svn92_trunk/src/daemon_wallpapoz	2010-03-18 01:01:50.000000000 +0900
@@ -98,6 +98,10 @@
   # create the system class ( to change wallpaper and read current desktop )
   # by calling external program
   wallpapoz_system = WallpapozSystem()
+
+  # Kill other daemon_wallpapoz if running
+  wallpapoz_system.prevent_multiple_start()
+
   available_style = { '3' : 'zoom', '2' : 'scaled', '1' : 'stretched', 
       '0' : 'centered', '4' : 'wallpaper' } 
   style = available_style[wallpapozxml.style()]