I noticed my MP didn't hibernate as expected. I have checked the logs and it is filled with:
2011-05-08 16:34:42.471676 [Info.][TvClient-TvHome: HeartBeat transmitter thread(19)]: TVHome: OnRemotingDisconnected
2011-05-08 16:34:43.193718 [Debug][MPMain(1)]: WindowManager: unroute to MediaPortal.Dialogs.GUIDialogOK:2002->WindowPlugins.home.GUIBasicHome:35
2011-05-08 16:34:43.198718 [Warn.][MPMain(1)]: GUIWindow:OnWindowLoaded: 'C:\ProgramData\Team MediaPortal\MediaPortal\Skin\StreamedMP\dialogOK.xml' is missing control id 11 (window property: btnYes)
2011-05-08 16:34:43.201718 [Debug][MPMain(1)]: WindowManager: route WindowPlugins.home.GUIBasicHome:35->MediaPortal.Dialogs.GUIDialogOK:2002
2011-05-08 16:34:42.471676 [Info.][TvClient-TvHome: HeartBeat transmitter thread(19)]: TVHome: OnRemotingDisconnected
2011-05-08 16:34:43.193718 [Debug][MPMain(1)]: WindowManager: unroute to MediaPortal.Dialogs.GUIDialogOK:2002->WindowPlugins.home.GUIBasicHome:35
2011-05-08 16:34:43.198718 [Warn.][MPMain(1)]: GUIWindow:OnWindowLoaded: 'C:\ProgramData\Team MediaPortal\MediaPortal\Skin\StreamedMP\dialogOK.xml' is missing control id 11 (window property: btnYes)
2011-05-08 16:34:43.201718 [Debug][MPMain(1)]: WindowManager: route WindowPlugins.home.GUIBasicHome:35->MediaPortal.Dialogs.GUIDialogOK:2002