Hi, I compiled hal.0.5.10 on my system... I can call methods registered on the Dbus at org.freedesktop.Hal.Manager   --- like GetAllDevices. And get the list of all device connected to the system at that time. But I am not able to get the signal  DeviceAdded  through DBus.... Below is the code i use to listen to the signal con=dbus_g_bus_get(DBUS_BUS_SYSTEM,NULL);      proxy=dbus_g_proxy_new_for_name(con," org.freedesktop.Hal","/org/freedesktop/Hal/Manager","org.freedesktop.Hal.Manager");      printf("Probably got a connectrion to the correct interface...\n");      loop=g_main_loop_new(NULL,FALSE);      m1=g_cclosure_user_marshal_VOID__STRING;      m2=g_cclosure_user_marshal_VOID__STRING;      dbus_g_object_register_marshaller(m1,G_TYPE_BOOLEAN,G_TYPE_STRING,G_TYPE_INVALID);      dbus_g_object_register_marshaller(m2,G_TYPE_BOOLEAN,G_TYPE_STRING,G_TYPE_INVALID);      dbus_g_proxy_add_signal(proxy,"DeviceAdded",G_TYPE_INVALID);      dbus_g_proxy_add_signal(proxy,"DeviceRemoved",G_TYPE_INVALID);      dbus_g_proxy_connect_signal(proxy,"DeviceAdded",(GCallback)device_added,NULL,NULL);      dbus_g_proxy_connect_signal(proxy,"DeviceRemoved",(GCallback)device_removed,NULL,NULL);      printf("Calling a remote method...\n");      err=NULL;      dbus_g_proxy_call(proxy,"GetAllDevices",&err,G_TYPE_INVALID,G_TYPE_STRV,&list,G_TYPE_INVALID); I am not able to determine what the problem...  Do i have to edit any policy files for this?? Or my code is wrong?? {I am trying to get DeviceAdded signal whner i connect my flash stick} Any suggestion on this is appreciated.... Thanks in advance . shankar