Cold, tired and frustrated, residents of more than 1.6 million homes in the Northeast remained without power on Tuesday and some were told it could take 10 more days to restore electricity after the rare and deadly October snowstorm. Nerves frayed, tempers flared in hard hit Connecticut on the fourth day without power since Saturday, when the unseasonably early storm raged from West Virginia to Maine, bringing down tree limbs and downing power lines.