I just got my work email added on to my 8830 a couple weeks ago, and ever since then whenever I lock my phone, an hourglass pops up and unlocks my phone. I then lock it again, and it stays locked for a while, then the next time I look at my phone, it is unlocked. I have started just putting my phone into standby mode so i don't accidentally call/text someone. Does anyone know of a reason why it would be unlocking itself.