Hello, A strange problem, which occurs both on my Aristo FT-8400 and my desktop Athlon 700 systems. The XFree 4.0 starts up fine (I even got the mouse going nice and smooth) and works fine, sometimes even for hours at a time. However, every now and then, I get an X server crash due to signal 11. This does not happen. Sorry for a newbie question, but what is signal 11 and how can I stop it. Thanx and sorry for wasting your time :)) Artur