I forgot to report this but it was a revision between 4452 and 4458 when I saw it.
The client ( Pizza90) was falling back in a game and was not able to catchup. Me ( the server) got a message about Pizza90 beeing slow. The next message I got was that he got disconnected without any kind of pausing for all, to give him a chance to catch up.
Looking at the message I got he got disconnected because of big lag. ( I am not 100% he wasn't disconnected due to its connection, but I think not )