Hi. I recently got a Samsung Galaxy Ace GT-S5830. I'm very happy with it, and have found it very easy to use, apart from one issue. I cannot seem to set a separate lock and home screen wallpaper. If I have the lock turned off and just the swipe enabled then the wallpaper changes, however if the security setting is set to having a pin / patten etc. to unlock my phone then the wallpaper will remain the same as my home screen wallpaper, no matter how many times I try to change it. If anyone can offer any advice on why this may be, I would be very grateful. Thanks very much, - Dan.