Vista reduces the wallpaper's quality

[Xer]

Hey =]

Recently I noticed that Vista reduces the quality to every wallpaper I'm setting on the desktop.

It looks like a poor quality JPEG image.

Same problem in the picture Slideshow.

How can I fix that?

Thanks!

[Bogo]

that only happens to me when i choose "crop to fit screen" or "mantain aspect ratio".

i have no problems with slideshow, though

[spyro94]

I have the same problem with wallpapers, slideshow is fine, but when I use jpg's as a wallpaper, the quality drops. ( I haven't tried other file formats)