Iam guessin u got data on...Mines does the same thing frm time to time(stock sms/mms).i normally clear the cache n data @app settings if anything..try "clearin cache "@reboot if u gotta.it might help more.
Are you running smart actions battery extender?? If so.. mine does it too. Reboot the device, or keep it awake for a few minutes... does the trick for me.