2G iPod Touch 3.1.2 jailbroken with redsnow.
So I've got Winterboard and I set my wallpaper for both home and the lockscreen, but the lockscreen is still blank.
I moved the lockscreen option to the top of the list. No luck.
So I've had a rummage around via SSH and still nothing. I replaced both wallpapers with new images in the directories and only the home image worked. The lockscreen is still blank.