Morning Jim,

>Filemon is great and Portmon is the same < s >.

Sysinternals definitely builds great tools. Get them all, burn then into a CD. Carry it always ;-)

>Now I'm seeing a length of 2 coming in but a length of only 1 having gone out, BUT this time the 2 are 2 ACKs (yesterday definitely NUL+ACK).
>
>So I'll no make sure that I'm first emptying the OutBuffer before sending ANY ACK from anywhere.

Are you looking at the receving end with PortMon also? Does it also see the extra character?