diff -up ./src/SerialImp.h.lock ./src/SerialImp.h
--- ./src/SerialImp.h.lock 2010-11-09 15:59:54.891179571 +0100
+++ ./src/SerialImp.h 2010-11-09 16:01:12.257819409 +0100
@@ -158,7 +158,7 @@ struct event_info_struct
# endif /* CMSPAR */
#
# define DEVICEDIR "/dev/"
-# define LOCKDIR "/var/lock"
+# define LOCKDIR "/var/lock/lockdev"
# define LOCKFILEPREFIX "LCK.."
# define FHS
#endif /* __linux__ */