Ack - sorry, Victor - I just noticed that I never responded to your question here.<br><br>Ping Plotter does, indeed, use the same API calls that Ping and TRACERT do. You might try turning on the High Performance Timer option in Ping Plotter - as Windows 2000 (and Windows NT) round the ping time. Turning on high performance timers tells Ping Plotter to measure the time - rather than using the time returned by Windows. This may change the behavior you're seeing.<br><br>