I'm having a problem getting custom LockBackgrounds to show up. They're named correctly and dropped in the theme directory I select through Winterboard, but they do not show up. I keep getting the lockscreen I set through iOS4. If I load a custom theme with it's own lockscreen, I get nothing at all. Has iOS4 changed something that I'm missing? Pointers much appreciated. Note: I'm using iPhoneBrower to load my themes and also Cydia.