diff -up NetworkManager-0.7.0/src/nm-serial-device.c.serial-debug NetworkManager-0.7.0/src/nm-serial-device.c
--- NetworkManager-0.7.0/src/nm-serial-device.c.serial-debug	2008-07-15 07:59:32.000000000 -0400
+++ NetworkManager-0.7.0/src/nm-serial-device.c	2008-07-18 11:52:29.000000000 -0400
@@ -21,7 +21,7 @@
 #include "nm-utils.h"
 #include "nm-serial-device-glue.h"
 
-/* #define NM_DEBUG_SERIAL 1 */
+#define NM_DEBUG_SERIAL 1
 
 #define SERIAL_BUF_SIZE 2048