my 254 randomly locks up have to pull electric out of back and reboot,tried updating firmwares then happens again,remote becomes unresponsive,anyone have similar problems or is it a bin job,just out of warranty,have tried buffer settings etc,very frustrating but it isn't time related,just randomly locks up,remote dosent respond,bought a new remote and that made no difference,isnt server related as it does it without anyrhing being added