It's definitely a query issue. It being network related is hard to tell but that would be my first guess. Either that, or the parallel task stop running for some reasons. First thing you should do is monitor your traffic and ensure that; Queries are being received (from memory, they should have a "Source Engine" header). Responses are being sent (the datagram should contains k,v pairs with extra data -- specifically what is not sent to clients through VMS -- such as "SERVERPASSWORD'