I've got the same thing going on but only notice it when starting a game. Game crashes right away the goes right back to screensaver.
Any solution?
08 09/10/10 21:07:12.913 Received Message from 10 (Media Plug-in / Living Room/Family Room) to 52 (Game Player / Living Room/Family Room), type 1 id 193 Command:Off, retry none, parameters: <0xa9940b90>
08 09/10/10 21:07:12.913 Parameter 97(PK_Pipe): -1 <0xa9940b90>
08 09/10/10 21:07:12.914 Received Message from 10 (Media Plug-in / Living Room/Family Room) to 20 (The core/hybrid / Living Room/Fa mily Room), type 1 id 192 Command:On, retry none, parameters: <0xa9940b90>
08 09/10/10 21:07:12.914 Parameter 97(PK_Pipe): 0 <0xa9940b90>
08 09/10/10 21:07:12.914 Parameter 98(PK_Device_Pipes): <0xa9940b90>
05 09/10/10 21:07:12.914 The target device 20 (routed to 20) has not registered. <0xb6525b90>
01 09/10/10 21:07:12.915 debug_stream_end MediaStream::~MediaStream c1 1002/0x9380390 <0x9010db90>