There is a new screen saver that is introduced in Sarge, which initiated a flame war at a Debian mailing list. The screen saver is named "Web Collage", which takes images from the web by random search. The problem is that a lot of porn also comes along with the other images. A default install of KDE would be using random screensaver. At some point the Web Collage saver might be used and you may get a porn on your screen. So, don't get shocked; prepare to enjoy the fun or tweak the settings for saving your head from your boss!