diff -uNr cheese-2.30.0/libcheese/cheese-camera.c cheese-2.30.0.new/libcheese/cheese-camera.c
--- cheese-2.30.0/libcheese/cheese-camera.c	2010-03-30 04:27:42.000000000 +0800
+++ cheese-2.30.0.new/libcheese/cheese-camera.c	2010-10-11 11:10:12.720556165 +0800
@@ -134,8 +134,10 @@
 
 static const int NUM_EFFECTS = G_N_ELEMENTS (EFFECT_TO_PIPELINE_DESC);
 
+#if 0
 GST_DEBUG_CATEGORY (cheese_camera_cat);
 #define GST_CAT_DEFAULT cheese_camera_cat
+#endif
 
 GQuark
 cheese_camera_error_quark (void)
@@ -1026,10 +1028,12 @@
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
+#if 0
   if (cheese_camera_cat == NULL)
     GST_DEBUG_CATEGORY_INIT (cheese_camera_cat,
                              "cheese-camera",
                              0, "Cheese Camera");
+#endif
 
   object_class->finalize     = cheese_camera_finalize;
   object_class->get_property = cheese_camera_get_property;
diff -uNr cheese-2.30.0/libcheese/cheese-camera-device.c cheese-2.30.0.new/libcheese/cheese-camera-device.c
--- cheese-2.30.0/libcheese/cheese-camera-device.c	2010-02-10 16:32:04.000000000 +0800
+++ cheese-2.30.0.new/libcheese/cheese-camera-device.c	2010-10-11 11:09:29.157556217 +0800
@@ -51,8 +51,10 @@
   CHEESE_CAMERA_DEVICE_ERROR_UNSUPPORTED_CAPS
 };
 
+#if 0
 GST_DEBUG_CATEGORY (cheese_camera_device_cat);
 #define GST_CAT_DEFAULT cheese_camera_device_cat
+#endif
 
 static gchar *supported_formats[] = {
   "video/x-raw-rgb",
@@ -438,10 +440,12 @@
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
+#if 0
   if (cheese_camera_device_cat == NULL)
     GST_DEBUG_CATEGORY_INIT (cheese_camera_device_cat,
 			     "cheese-camera-device",
 			     0, "Cheese Camera Device");
+#endif
 
   object_class->finalize     = cheese_camera_device_finalize;
   object_class->get_property = cheese_camera_device_get_property;
diff -uNr cheese-2.30.0/libcheese/cheese-camera-device-monitor.c cheese-2.30.0.new/libcheese/cheese-camera-device-monitor.c
--- cheese-2.30.0/libcheese/cheese-camera-device-monitor.c	2010-03-30 04:27:42.000000000 +0800
+++ cheese-2.30.0.new/libcheese/cheese-camera-device-monitor.c	2010-10-11 11:10:55.028556291 +0800
@@ -69,8 +69,10 @@
 
 #define CHEESE_CAMERA_DEVICE_MONITOR_ERROR cheese_camera_device_monitor_error_quark ()
 
+#if 0
 GST_DEBUG_CATEGORY (cheese_device_monitor_cat);
 #define GST_CAT_DEFAULT cheese_device_monitor_cat
+#endif
 
 enum CheeseCameraDeviceMonitorError
 {
@@ -339,10 +341,12 @@
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
+#if 0
   if (cheese_device_monitor_cat == NULL)
     GST_DEBUG_CATEGORY_INIT (cheese_device_monitor_cat,
                              "cheese-device-monitor",
                              0, "Cheese Camera Device Monitor");
+#endif
 
   object_class->finalize = cheese_camera_device_monitor_finalize;