Suppress vibrate when docked? When I dock my iPhone in the charger (desk stand), it briefly chimes to say it's charging. If it's on silent, then it vibrates instead of chiming. When I go to bed and put the phone in the bedside charger, the noise from either is very annoying.

I want to suppress the vibrate-on-charge. How can I do that? 

It's already jailbroken so suggestions in that genre are fine too.
The only way I've found to deal with this on a non-jailbroken phone is to set the side switch to the non-silent setting, plug in headphones and then dock the phone. The chime sound will only play through the headphones and the phone will not vibrate.