Those who have the dock: I notice that it is very low-profile...if the iPhone is pressured backward while in the dock (for example, while sliding to unlock or just using the touchscreen while in the dock), is the stress primarily on the male/female charger connection or does the dock itself prevent this 'play'? I ask because I've got an old iPod dock that fits the iPhone but it is only held on by the male/female charger connection, which leaves a lot of 'play' and makes me a bit nervous. So I was wondering whether the 3G dock would be any better in this respect.