Product review (1 stars): Four years of lame cleaning, now it breaks...good riddance
I had the same issues with particles getting stuck on the glassware regularly.  Shame too, we bought this unit as a matching set with our refrigerator, it has a very tall washtub, and lots of features packed into narrow profiles for a nice price.  Opening it in the rinse cycle to add some vinegar helped with the particles, but last week it started peeing on the floor - when the drain pump impeller loosened on the axle and failed, the float assembly was also clogged with grime and failed to shut off the water.  It jsut kept filling the tub and let the water drain through the front door.  In the interest of saving space, the float assembly is hidden away where it cannot be maintained, and impossible to check without removing the dishwasher.  We're hoping that a Bosch without some of these bells and whistles will do the job better.