--- /Users/y0dajdy/src/boostcvs/boost/libs/thread/src/thread.cpp	Fri Sep  6 17:34:47 2002
+++ /Users/y0dajdy/Programming/arnoldTools_c++/ArnoldsFrameWork/boost_1_29_0/libs/thread/src/thread.cpp	Thu Nov 21 18:20:56 2002
@@ -220,9 +220,8 @@
 #elif defined(BOOST_HAS_MPTASKS)
         int microseconds;
         to_microduration(xt, microseconds);
-        Duration lMicroseconds(kDurationMicrosecond * microseconds);
-        AbsoluteTime sWakeTime(DurationToAbsolute(lMicroseconds));
-        threads::mac::detail::safe_delay_until(&sWakeTime);
+       	AbsoluteTime sWakeTime = AddDurationToAbsolute(microseconds * kDurationMicrosecond,  UpTime());
+       	threads::mac::detail::safe_delay_until(&sWakeTime);
 #endif
         xtime cur;
         xtime_get(&cur, TIME_UTC);