Screen Saver doesn't work in KDE

OpenSUSE 10.2, KDE 3.5.5
Compiz / XGL

The screensavers work in the preview window, and when I click the preview button, they work fine in full screen, but when it launches the screen saver on its own, all there is is a black screen. At this time, I’m not really experiencing any other graphics problems. Any ideas?