Hi, I have a G4 MDD with RV250 (radeon 9000) and LCD Acer 1951 plug in DVI. The problem is when i start the X-window the refreshing rate seems to be inadequate and I have diagonals refreshing stripes on my screen with RGB colors. I have try to change config (video card setting and monitor) but this won't fixed the trouble. Anybody has a solution ?