Erm... I just don't see why anyone would be plugging in their iPads to their computers, when there are lots faster ways to get all
pictures from the iPad to the computer, and fully automated ways, too, so that as soon as you start up your computer, all pictures from the iPad are already waiting for you there.
Using the USB cable (and, indeed, iTunes) for anything at all with an iPad/iPhone is hopelessly old-fashioned and ineffective nowadays. Jobs was right in spurning USB ports -- it's snow of yesterday, and this is the wireless era.