Could you please try to obtain a backtrace by following the instructions on https://wiki.ubuntu.com/MozillaTeam/Bugs, or upload the crash report that probably was generated during the crash and that should be located at /var/crash/. Also, please if this crash is reproducible describe the steps that lead to it. This will greatly aid us in tracking down your problem.
Could you please try to obtain a backtrace by following the instructions on https:/ /wiki.ubuntu. com/MozillaTeam /Bugs, or upload the crash report that probably was generated during the crash and that should be located at /var/crash/. Also, please if this crash is reproducible describe the steps that lead to it. This will greatly aid us in tracking down your problem.