The first thing I noticed is that your log timestamps indicate that logging started two days ago. I think you must have Media Server feature on. With Media Server on, closing Media Center only closes GUI, and MC was actually still running in the background. So your re-starting of MC did not really restart it. You need to go to the right-side of Windows' Taskbar and find MC icon there, and right click and choose "Close Media Center and Media Server" if the GUI is still on, or choose "Close Media Server" if GUI is already closed.