Maybe xorg isn't the cause but nvidia-glx. Wich version of nvidia-glx are you using?
When do you have the problems with thunderbird, firefox, etc? With the nv or the nvidai driver, or maybe with both drivers? -- moving windows jumps xorg cpu usage + fan https://launchpad.net/bugs/89632 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
