I was fussing with my VISTA PC (Media Center) and eventually shut it down. Went into the living room to turn on the HR20 only to see some message about "Media Center Off Line..." on a mostly black screen. I hit Guide on the remote and the entire screen went black. After that there was NO response from the HR20. I hit the Red Button to reset it, and the unit worked fine the rest of the night. So, I'm guessing this crash was network related. That could be a serious problem as my computer is ON and OFF several times a day.