Notice the same thing on my Lenovo x61t. Looks like there is this Kernel IPI thing that could be causing the issue. First line from running powertop. Running Jaunty beta with latest updates.
63.6% (454.8) <kernel IPI> : Rescheduling interrupts -- [jaunty]XPS 1330 very hot https://bugs.launchpad.net/bugs/344661 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