> Martin,
>
> I've added a test to my program to see whether the value from 
> GetSystemTimeAsFileTime ever steps backwards, and it hasn't done so in 
> my testing so far.  So I remain unsure why, on a system without the 
> interpolation code, I'm seeing the TX time before the RX time. 
> Certainly would be nice to have someone confirm the result - a default 
> installation on a Vista or Windows-7 should show this.
>
> Cheers,
> David

There is a brief write-up of the program, and sample plots from "good" and 
"bad" NTP servers, here:

  http://www.satsignal.eu/ntp/NTP-timestamp.html

Martin has been able to confirm the timestamp sequence issue using 
different test software running on a different OS.

Cheers,
David 

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