This is a widely known problem. I think it is in the Adobe Flash plugin for Linux and not specific to any distribution.
I think Canonical needs to contact Adobe about it. ** Changed in: flashplugin-nonfree (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/225165 Title: Firefox consumes far too much CPU ressources with web pages involving Adobe flash plugin -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs