Thanks for the log file.
It seems that everything is fine.
This is what I wrote in my email:
If your internet connection is unstable, connections to the news server may occasionally drop.
Because of these hard disconnections, the connections are not closed properly and the news servers still count them as "a connection", which will affect your total number of allowed connections.
The messages you see like "Waiting for server response" are normal.
Such a message appears when Usenapp sends a command to the news server and the server does not respond immediately.
In short, all seems fine to me.