(In reply to comment #2) > please attach a full /var/log/Xorg.0.log, and also have a look with xrestop to > see what's hammering your server. does it help if you close all apps > (particularly firefox)? I have the same issue. Things used to work fine, but then suddenly this started up. I removed and installed X completely with no difference. The only thing I note is running the game Supertux, I play normally only when I unselect the option of OpenGL. Glxgears start perfectly and after a while it slows down. top shows that X-org suck 99,7% of cpu resources. Here is a copy of my log. My cpu overheats by simply running glxgears only, with nothing else. Please see if you can help us stragglers!!! X Window System Version 6.8.2 (Ubuntu 6.8.2-77 20051010174523