I have also observed this on my desktop PC. I have tried the steps on comment #2 and these have stopped the CPU getting pegged for now.
** Changed in: smart (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/878529 Title: 'smart' process load cpu on 100% To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/smart/+bug/878529/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs