I second adding the ability to turn off the shutter sound, or at least route it through the headphones if they're plugged in. I've wanted to use it at work and other quieter places, but I don't want to bother everyone near me with that sound.
Yep I'm updated to the latest version. I also have a Japanese 3G iPhone, I wonder if that makes any difference... Even still, when my headphones are plugged in and I take a normal photo, the shutter sound doesn't play through the speaker at the bottom of the phone. :?