I preferred the old-way of using the slider to lock the orientation. I used that much more than mute. Besides, holding down the volume down button mutes the iPad....so as of 4.2, there are two methods to mute the iPad via button controls, but to lock the orientation we need to double-tap the home button, slide our finger across the screen and then tap the on-screen button. It was better for me the other way.
|