My refrigerator is just over 2.5 years old. The water and ice started tasting very bad for no explanable reason. The filter had about 50% life left when this happened. I changed the filter out for a new one even though the first half of the filter use was fine. The new filter is producing the same problem. We have flushed the water line coming into the frig even though that shouldn't have any affect. Thanks for any input.