1) The socket doesn't seem to unbind from the LocalEndPoint until the process ends.
2) I have tried the solutions from the other question, and also tried waiting a minute - to no avail.
3) At the moment I have tried the below to get rid of the socket and its connections:

public static void killUser(User victim)  
    {  
        LingerOption lo = new LingerOption(false, 0);  
victim.connectedSocket.SetSocketOption(SocketOptionLevel.Socket,SocketOptionName.Linger,     lo);  
        victim.connectedSocket.Shutdown(SocketShutdown.Both);  
        victim.connectedSocket.Disconnect(true);  
        victim.connectedSocket.Close();  
        clients.RemoveAt(victim.ID);  
    }  

4) After a bit of googling, I can't seem to be able to unbind a port, thus if I have a sufficient amount of connecting clients, I will eventually run out of ports to listen on.