Agree. My experience is like the other posters'.......it's your drain, most likely the horizontal part. That, or else there isn't enough "fall" in your drain once it passes thru the kitchen floor, and gunk has settled out there and slowed things down. It isn't the dishwasher, so I'd start looking below that point. There's a story about a woman who had pasta in hers to the point that the drain in the basement had to be resected and then compressed air applied to open out the flow. I think I read about that somewhere. ******************************