Hi there, the following program /****************************************************/ #include <iostream> #include <boost/timer.hpp> using namespace std; boost::timer t; main() { t.restart(); for(int i=0; i<5; i++){ usleep(500000); cout << t.elapsed() << endl << t.elapsed_min() << endl << t.elapsed_max() << endl; } } /****************************************************/ gives five times the following output, in 0.5 s intervals: 0 1e-06 9.22337e+12 I have tried the timer_test.cpp application (from http://www.boost.org/libs/timer/index.html). Most of it seems to be working, but the first messages also say: timer::elapased_min() reports 1e-06 seconds timer::elapased_max() reports 9.22337e+12 seconds, which is 2.56205e+09 hours After this the output seems to be fine. So something clearly is wrong. Any ideas ? This is on an OpenSuSE 10.2 system with a Boost 1.34.0 (with added ASIO support, 0.38rc3). g++ is 4.1.2 . Thanks and Best Regards, Ruediger