Some time ago I ran into the weirdest problem helping a guy with
his sends. It was basically the same problem as yours, but his
port was changed whether resuming or not. We eventually found
that it happened only when he was connected to IRC on port 6667.
I know it sounds dumb but it happened everytime. He stopped using
6667 and his sends have been fine since. It was a Linksys router
if I recall correctly.
