Ubiquitous environments facilitate the collection of information pieces from sensors, databases, or mobile devices in order to compose the context of entities like users, places, or things. The context obtained in this way can be used to automatically adapt the behavior of services, which results in the new paradigm of context-aware services (CASs). In recent years, a lot of research has covered the functional aspects of CASs. However, CASs in ubiquitous environments impose new management challenges, which has not been considered so far. The goal of this paper is to identify new challenges on CAS management and thus to provide a contribution for further work in this area.