My teenage son was playing with my new iPad the other day. He changed my lock screen and home screen to monster trucks. They displayed well for about a day and then all of a sudden the wallpaper grew 4x (I can only see the upper left quadrant of the image). After a bunch of fiddling with wallpaper settings I finally got the lock screen changed to a normal image and haven't messed with that since.
My problem now is the home screen image is still 4x and I can't change it to anything. In settings/wallpaper, when I change the image, it fills the miniature home screen with the image I selected, but when I exit out, the same old 4x image is still there. I have also tried re-springing and re-booting the iPad several times. No luck. Any suggestions (other than complete wipeout and start over). I've just finished getting all my apps sorted and downloaded just the way I like it. It's just this wallpaper thing.