There's been no activity, nor more useful information added to this bug. I'm going to mark it RESOLVED INVALID.
For now, if you are continuing to experience performance problems, I'd suggest using the Gecko Profiler add-on, collecting a profile, sharing the profile, and then pasting a link to your uploaded profile either in this bug, or a new bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/20765 Title: firefox hangs when it loads a page in the background To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/20765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs