Network Speed drops after firmware upgrade

Community Archives WD TV Live Hub Network
3

Ok , so downgrade firmware - NOK

Tried with WIN 7, Win XP - NOK

Disconnected Router , connect only with Gigabit Switch - NOK

Reconfigure Router + firmware - NOK

Format disk on WD Live Hub - NOK

NOK means network speed is ~3-4 Mb , after several months worked with 15Mb/sec.

I’m out of ideas , I HATE this media player.