With Kubuntu, each time I try to start up the system, after the splash screen and the graphical screen comes into place, the screen keeps on flashing, like it is trying to redo the last process. A lot of the times when I move the mouse, it goes right back to the middle of the screen by the time one or two flashes pass by. Is there anything I can do to stop it from doing that?

Kubuntu 9.10 - Karmic Koala