We got a dishwasher about 4 months ago and I love it. Our glassware never went cloudy and I assumed that this was because we had a good dishwasher or the right powder or something else, as I thought they'd have gone cloudy straightaway if they were going to. But they've just started clouding up this week, boo his. Is there any way to clean them, or any way to prevent it happening? Did I do something wrong to make them suddenly go cloudy or is it a cumulative thing - will all glasses go like this in every dishwasher after a while? I've followed the instructions wrt rinse aid, salt and so on and always keep them topped up.