Does anyone know why it takes longer for Windows to change it's Visual Style when I'm using a JPG wallpaper rather than a BMP one? If I change the entire theme, or a Visual Style with no wallpaper or a BMP wallpaper, it changes instantly. However, if I have a JPG background, it takes it longer, and sometimes the background (everything behind the Please Wait dialog) starts to fade. I thought maybe it's because Windows automatically converts JPG to BMP somehow, and maybe it re-converts it every time I change a VS and it takes a little time? Any other thoughts? Thanks.