Confirmed on quantal. At the tame time, thunderbird is triggering constant redraws as seen in the Compiz Benchmark plugin. Killing and restarting thunderbird fixed it for me.
** Also affects: ubuntu-power-consumption Importance: Undecided Status: New ** Summary changed: - thunderbird uses excessive cpu power + Thunderbird stuck at 100% CPU -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/927515 Title: Thunderbird stuck at 100% CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-consumption/+bug/927515/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs