hi
The hosting warning message comes up a lot even for many people who can host (I've been getting it since 1.02 and can host fine and so do a few of the people I know), this type of thing can reduce the amount of players playing online and amount of games, because many players might think they cannot host after this warning and seeing no one joining (not many people join instantly or even within the first minute) and they don't see many games (due to many people thinking they cannot host). yes people can just ask others to test the hosting capabilities with them, but I don't think that always occurs.
There should be a message to help people who have the issue, but it should somehow be reworded, not to make people who can host believe they can't or somehow the detection has to be changed.