This problems seems to be realted to the oneiric kernel. From natty to oneiric the kernel versions have changed from 2.6 to 3.0 and apparently in the new kernel issues were found with this script. This script has been disabled by default now. Marking this bug as fix released.
If you believe this bug still persists, please re-open the bug report. Thank you for your time and contribution. ** Changed in: powernap (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/841967 Title: 01cpu_online script hangs, backtraces, bumps load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/powernap/+bug/841967/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs