Our 8 year old Bosch dishwasher runs fine, but it appears it's leaking somewhere.  I removed it this morning because I could see it was wet underneath.  But when I got it out I couldn't find any evidence of a leak.  The door on the front is a couple of inches forward of the main body, if the leak was coming from the door I would think that there'd be water on the floor in front of the dishwasher.  The water is under the dishwasher though.

Next is to find somebody more adept at discovering and repairing this machine than myself.  My wife has wondered if we should consider a new dishwasher, but as I said, it functions perfectly and quietly.