Thank you for taking the time to report this bug and helping to make Ubuntu better. Could you please try to obtain a stacktrace by following the instructions on https://wiki.ubuntu.com/MozillaTeam/Bugs#Hangs.2C_or_excessive_CPU_usage
Also, please answer these questions: Is this hang reproducible? If so, which are the steps that lead to it? Which flash package do you have installed? Which Java package do you have installed? Which Firefox extensions do you have installed? This will greatly aid us in tracking down your problem. ** Changed in: firefox (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1008664 Title: Firefox 12 freezes for a 1-3 seconds every 30 seconds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1008664/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs