QTH.net was rejecting posts from Nabble briefly.
Nabble support investigated but by that time posts were going through.
If you use Nabble, you'll get a warning on your posts that they haven't been accepted yet.
If this problem appears again in the future, feel free to let me know.
Nabble is a free service, like QTH.net, but they do have a paid support option of $2/week.
Leigh/WA5ZNU
P.S. The longest LDE I've personally experienced was 150milliseconds.