I've got a fast wifi connection.
I turn the app on, decide to share my own, look at the nice wallpaper, only it won't change. will only very quickly fade to black as if it's about to change but loads the same wallpaper.
I turn it off an on after about 20 mins, only then will it show a different wallpaper, and the whole situation repeats.
Am on 8gb iphone 1.1.3 OTB, but restored to 1.1.4 then back to 1.1.3.