Thats one of the last Panasonic plasmas! Completely shocked that its appearing on any modern plasma ( I know that its slowly frying my 12 year old LCD but its coming to the end of it life) Q: is your "pixel" orbiter mode switched on and your brightness / contrast lower than 50%? Would you not try calibrating the screen - I vaguely remember there being some sort of pattern tool in the service menu. >Sol