piii750 ati rage mach64 Mo linux 2.6.8 debian unstable (it's a laptop) last xorg cvs last xcompmgr cvs running X in 16bpp, xcompmgr It's unusable. I can't move a window, resize, even typing something in xterm is slow. What's wrong with my conf ? Do I miss something ? thanks in advance, and btw, great job ! t.