On my ORD-AMS flight last night, there cerainly was an issue with the lavs. About an hour before the end of the trip, the purser announced that only one F lav was working, and if you needed to go you would have to be escorted there. A few minutes later, the announcement that ALL lavs on the plane were inoperable and "we are sorry for the inconvenience." No kidding. Glad I slept through breakfast and my usual two rounds of OJ and coffee. I feel soory for the guy accross from me who was walking around in pain until we were ready to land. Brutal.