diff --git a/[refs] b/[refs]
index cc21570aba92..a7b37c7fcbd3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ca99c1da080345e227cfb083c330a184d42e27f3
+refs/heads/master: cca57c5b5ab164e3c96576fc7739c0a30c2eab72
diff --git a/trunk/lib/Kconfig.debug b/trunk/lib/Kconfig.debug
index d57fd9181b18..6ecc180beb71 100644
--- a/trunk/lib/Kconfig.debug
+++ b/trunk/lib/Kconfig.debug
@@ -101,7 +101,7 @@ config DEBUG_PREEMPT
 
 config DEBUG_MUTEXES
 	bool "Mutex debugging, deadlock detection"
-	default y
+	default n
 	depends on DEBUG_KERNEL
 	help
 	 This allows mutex semantics violations and mutex related deadlocks