Just for the record, it's port 5201 using port forwarding with the 500. What I've read is those that are running the relay protocol on the wdtv live ( a slingbox that isn't using port forwarding ) are seeing disconnection problems. Sounds like you don't have port forwarding correctly setup on your router. What I would do is before your brother's slingbox connection drops, ask him to press the b ( red ) button on the wdtv live. Check the connection stream protocol. If you've got port forwarding setup correctly, he'll see tcp lan. If not, you'll see relay. If what others are saying are true about disconnection problems on the wdtv live and you're seeing relay, then try port forwarding 5201 instead.