You know, in the past I have messed with some of my friends by taking a screen shot of their desktop and setting it as their wallpaper. Now I would make their icons invisible so nothing would work, but it kinda sounds like the same thing, like you have an image setup with the taskbar on as wallpaper. I can't help but notice that the time and dates are different. Does the time and date change on the bottom taskbar? Just out of curiosity, have you changed the wallpaper?