[thrashingdeth]

i used to have this problem back with 6.1. I suspected it was because of s2u2 because i had slide to answer on, but when i took that option off, (because of my suspicion)and the problem persisted. Everytime i would get a call i would get a message saying that s2u2 was uninstalled or that it did not have enough certs. Many people over at xda have been talking about the same problem. Once i flashed to oem 6.5 the problem went away. idk just a thought