Here is a possible solution to a problem with similar symptoms. http://blog.kelsin.net/2009/02/24/slow-firefox-high-xorg-cpu-usage-debian-and-ubuntu-solved/ It says to add the AccelMethod line to xorg.conf.
-- xorg use cpu 100% sometime with firefox https://bugs.launchpad.net/bugs/562802 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
