I had about 4,000 texts too, just let it erase overnight and when you wake up your phone should be working like it should.I have the same question as you about the auto erase, i tried looking and havent found any app that does that yet, but hopefully one will come to us soon. Sorta stupid to not put that on a smartphone if you ask me. But good news is i did hear that 2.x will have the auto-erase option