@luca: I've seen the 2 hours battery time in two scenarios only: When listening on streaming internet radio. This _sucks_ power. While using one particular SiS chipset-based wi-fi router that I own, it somehow manages to disable the N800 wi-fi power saving function. I own other (newer, faster) wi-fi routers as well, and none of them (or any other I've used, for that matter) exhibits the same anomalous behaviour.