diff -ruN samba-3.4.2.orig/source3/passdb/secrets.c samba-3.4.2/source3/passdb/secrets.c
--- samba-3.4.2.orig/source3/passdb/secrets.c	2009-09-30 14:17:40.000000000 +0200
+++ samba-3.4.2/source3/passdb/secrets.c	2009-10-14 14:39:43.000000000 +0200
@@ -936,6 +936,7 @@
 
 		SAFE_FREE(old_style_key);
 
+		SAFE_FREE(*pw);
 		*pw = smb_xstrdup(old_style_pw);
 	}