Ever since I updated from 3.1.3 to 4.0 GM, I have been having SMS issues. When I send an MMS, I stop receiving texts until I restart the phone. It doesn't happen every time but happens very often. If I don't get responses back after 10-20 minutes then I restart my phone to be safe and sure enough I receive multiple texts that never came through with old time stamps. Is anyone else having this issue?