I have an Asko mid-range dishwasher that's about 10-12 years old. In the
last two weeks, it's started leaving streaks all over the dishes and on the
stainless interior. I'm not talking about a few minor streaks--these are
major whitish streaks and blobs that make the glasses and stainless look
unwashed. I had been using Cascade gel and Jet Dry rinse (as always) but
switched to Cascade powder to see if that would be any better. It isn't.

Any ideas what could have gone wrong?