We had something similar happen to our dishwasher at our beach house. We think our problem was acutally caused by us. The dishes that we purchased, (heavy duty ceramic from Crate and Barrel so that if you dropped them they would not break), was actually too heavy for the drawer when loaded and when the guests kept bringing the drawer out to unload it finally tooks its toll on the door hindges when in turn caused it to be hard to shut when it turn caused the guests to push harder to close and the latch evertually broke. We don't know for sure that is what happened but between the dishwasher and the washer/dryer these applicances are the ones most used week after week after week. My husband and I talked about a heavy duty stainless steel dishwasher, which is what I have at home, but like he said these are not made to be used like ones in a rental home. We ended up replacing it with a new model of what was in there, a fridigdaire. We wanted to keep all of the applicances the same and I am sure like everyone else we have that typically builder package. I don't know if I would invest loads of money just for the fact that if something happens to the higher end it will cost even more to fix or replace. These applicances take a beating and our salesman told us that we are luckly if we get 3-5 years worth of wear with them being in a rental home, and a beach home in fact that has a lot of turnover each year.
Good Luck.
Good Luck.