If you are anything like me you hit that volume button just randomly. And when you need to listen to something you have to set your volume back to whatever setting you had it on. But with the tweak DelayVolChange the first click of the volume button does nothing. You have to press it a second time after the first click to actually change the volume. 

This is a great tweak for you clumsy people like me. So get to Cydia and checkout DelayVolChange.