SOMEHOW I pressed a series of buttons that has caused the display to read "CHILDBLOCK" How the heck do I unblock the unit and how did I bring forth the mighty childblock from nowhere? I've had the unit three years, and its so very strange that the SONY unit is just discovering that at 46 I sometimes act like a child..... LOL... but thats my experience of SONY these days.. they're just about as sharp as a marble when it comes to making electronics....WHAT HAPPENED TO SONY RELIABILITY?????