Is this still occurring on Firefox 37.0.1? If so, which video driver are you using and what video hardware do you have? (if you are not sure about your video hardware, run lspci -vnn|grep VGA )
** Changed in: firefox (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/635023 Title: firefox plugin-container using 99% CPU - overheating and lock-up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/635023/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs