do you use compiz? could you disable it and test? could you execute top and see what process is using that amount of cpu while changing the desktop? There's no indication of that on the report.
** Changed in: gnome-control-center (Ubuntu) Importance: Undecided => Low ** Changed in: gnome-control-center (Ubuntu) Status: New => Incomplete -- Changing desktop background eats up all available CPU time https://bugs.launchpad.net/bugs/376030 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