Hi to all iPad 4 owners, I would just wanted to ask if you noticed that the lock sound of you ipad 4 is a little low when you set it to the middle level. I came from an ipad 3 and I really noticed the difference on the sound click when locking the ipad. However when i set the volume of the ipad 4 to max , it is comparable to the sound of the lock sound of the ipad 3. Is this just a software issue of the iPad 4? Or has anyone experienced this?