Micron is supposed to turn profitable again this year. But will it be profitable enough?Micron Technology (MU -4.62%) stock fell 3.9% through 10:30 a.m. ET Monday morning after investment bank Morgan Stanley dramatically slashed its price target on the computer memory maker.Up until today, Morgan Stanley had been saying Micron stock was worth $140 a share. Now, the banker believes Micron may be worth as little as $100.What Morgan Stanley said about MicronWhat changed? In today's note, Morgan Stanley analyst ...