Disabling screen blanking

We have a unit working with a kiosk-like application. Alfer some minutes, its screen blanks. If I generate some X event like mouse move or key press, the screen turns on again for some more minutes. I would like to disable this screen off completely. That screen is supposed to show its content continuously. In YAST, monitor settings, DPMS is disabled. In control center, peripherals, display, power management is disabled. This happens in SuSE 10.0, 9.3 and 9.1. Previous SuSE versions could have this "feature" disabled by uninstalling kpowersave, but now we cannot uninstall it anymore without corrupting KDE. Is there any hint to turn off this "feature"?