I am not sure if it is due to the buggy firmware 2.0, but I have noticed that when I plug in the headphones into the headphone jack on the iPhone 3G, the iPhone awakes from its sleep and begins to play music. It does not seem to work every time. Maybe it is just when I have been listening to music previously? I am not sure. I was using the V-MODA Vibe Duo headphones when this happened. Has anybody experienced this? Is there a way to turn it on or off? Is this an announced or unanncounced feature?