Index: C:/Code/Battle/Source/Library/Boost/libs/thread/src/tss_hooks.cpp
===================================================================
--- C:/Code/Battle/Source/Library/Boost/libs/thread/src/tss_hooks.cpp	(revision 564)
+++ C:/Code/Battle/Source/Library/Boost/libs/thread/src/tss_hooks.cpp	(revision 567)
@@ -18,6 +18,10 @@
     #define WIN32_LEAN_AND_MEAN
     #include <windows.h>
 
+#if defined(BOOST_MSVC) && defined(_DEBUG)
+    #include <crtdbg.h>
+#endif
+
     namespace
     {
         typedef std::list<thread_exit_handler> thread_exit_handlers;
@@ -26,6 +30,20 @@
         boost::mutex* threadmon_mutex;
         void init_threadmon_mutex(void)
         {
+#if defined(BOOST_MSVC) && defined(_DEBUG)
+            // threadmon_mutex is never explicitly deallocated, but only allocated once.
+            // This is harmless, but MSVC CRT debugging shows it as a "memory leak".
+            // temporarily turn off leak tracking for this allocation.
+            class suppresscrtdbg
+            {
+              public:
+                suppresscrtdbg() : dbgflag(_CrtSetDbgFlag( 0 )) {}
+               ~suppresscrtdbg() {_CrtSetDbgFlag(dbgflag);}
+              private:
+                int dbgflag;
+            };
+            suppresscrtdbg scd;
+#endif
             threadmon_mutex = new boost::mutex;
             if (!threadmon_mutex)
                 throw boost::thread_resource_error();