diff -Naur postgresql-9.2.0.sockets/src/include/pg_config_manual.h postgresql-9.2.0/src/include/pg_config_manual.h
--- postgresql-9.2.0.sockets/src/include/pg_config_manual.h	2012-09-06 17:26:17.000000000 -0400
+++ postgresql-9.2.0/src/include/pg_config_manual.h	2012-09-06 18:13:18.183092471 -0400
@@ -203,7 +203,7 @@
  * support them yet.
  */
 #ifndef WIN32
-#define DEFAULT_PGSOCKET_DIR  "/tmp"
+#define DEFAULT_PGSOCKET_DIR  "/run/postgresql"
 #else
 #define DEFAULT_PGSOCKET_DIR ""
 #endif