When this was first introduced I actually got locked out of my ipad- the lockscreen image I have has a lot of refective patches in it- it's a picture of my children swiming with a lot of reflections off the sea surface. I could not see the keyboard to type my password. I was an amateur beta tester and I reported this- I felt this was quite a serious bug, but nothing was done. Even when they actually allowed you to reduce the transparency in the screen after you had logged in, the translucency persisted (they've just fixed this now) before you logged in. The workaround, it being a ipad and not an iphone, was to rotate the ipad 90 deg. which moved the keyboard off the sparkly sunny bits of the image. Lunacy! Real form before function stuff- what's happened to "it just works"?