LG BD670 "Network Error"

Most times, when I push STOP on the player returns a network error and must go to "Home" and my Serviio server does not appear.
The machine is a MacMini running Lion (MacOS X 10.7.3); connected with Ethernet 100Mbs with a Huawei Vodafone HG556a router and WiFi n to the player.
No packet loss over the WiFi network (tested with other MacBook running Snow Leopard and Acer C5315 running Windows Vista).
Any help will be well received.
The machine is a MacMini running Lion (MacOS X 10.7.3); connected with Ethernet 100Mbs with a Huawei Vodafone HG556a router and WiFi n to the player.
No packet loss over the WiFi network (tested with other MacBook running Snow Leopard and Acer C5315 running Windows Vista).
Any help will be well received.