In the address bar of firefox can you clear it and type "about:plugins" without the " and save the page as a file and attach it to this bug report. To see extenstions can you click on tools than addons and list what you have under themes and extenstions please.
-- cpu usage goes to 100% when using firefox https://launchpad.net/bugs/92414 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs