--- ./dmalloc-5.5.2/settings.dist.orig	2008-09-23 09:24:56.000000000 +0200
+++ ./dmalloc-5.5.2/settings.dist	2008-09-23 09:25:27.000000000 +0200
@@ -409,7 +409,7 @@
  */
 
 #ifndef LOCK_THREADS
-#define LOCK_THREADS 0
+#define LOCK_THREADS 1
 #endif
 
 #if LOCK_THREADS