I have found my issue in another bug report; https://bugs.launchpad.net/ubuntu/natty/+source/cairo/+bug/725434
The proprietary Nvidia drivers seem to be the problem indeed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/735482 Title: average load is higher than 2 and cpu is at 100% when running unity -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs