It's happening in Firefox 20 too. Disabling the globalmenu extension solves the problem.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1132234 Title: Firefox 19 unresponsive for a few seconds if using the globalmenu extension Status in “firefox” package in Ubuntu: New Bug description: I'm using firefox 19 with the globalmenu extension. After selecting the firefox window, the first attempt to interact with the program (i.e. open or close tab, select a tab, scroll down the webpage etc.) makes the program unresponsive and the CPU runs at 100% for a few seconds. Afterwards, the required action is performed and the program works fine until the focus is moved to another window and back to the firefox window, then the problem appears again. I've noticed that disabling the globalmenu extension solves the problem. I'm on Ubuntu 12.10 with unity 6.12.0 firefox 19.0 firefox-globalmenu 19.0 (in the firefox add-ons page is described as Global Menu Bar Integration 3.7.1) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1132234/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
