Thanks for your bug report. We need you to install a debug version of firefox. Could you follow the instructions in https://wiki.ubuntu.com/DebuggingProgramCrash and install firefox-dbgsym?
This will mean that you'll be able to provide a backtrace (https://wiki.ubuntu.com/Backtrace) and any information provided by the crash will be more meaningful for the developers. ** Changed in: firefox (Ubuntu) Status: Unconfirmed => Needs Info -- after normally use and close , firefox crash! https://launchpad.net/bugs/69987 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
