--- libzeitgeist-0.3.6/src/zeitgeist-log.c.debug	2011-03-07 23:25:43.000000000 +0900

+++ libzeitgeist-0.3.6/src/zeitgeist-log.c	2011-03-23 01:32:50.000000000 +0900

@@ -1048,7 +1048,7 @@

   self = ZEITGEIST_LOG (user_data);

   priv = ZEITGEIST_LOG_GET_PRIVATE (self);

-  g_object_unref (priv->log);

+  if (priv->log) g_object_unref (priv->log);

   priv->log = NULL;

   g_object_notify (G_OBJECT (self), "connected");