Please check in var/crash for a crash report please as that sounds like it crashed.
Thank you for the bug report. Could you please install the firefox-dbg package and try to obtain a backtrace (or crash report) by following the instructions on https://wiki.ubuntu.com/MozillaTeam/Bugs This will greatly aid us in tracking down your problem. Which flash package do you have installed? Which Java package do you have installed? Which firefox extensions do you have installed? ** Changed in: firefox (Ubuntu) Assignee: (unassigned) => Mozilla Team Status: Unconfirmed => Needs Info -- can't start firefox, error "firefox already running" window tab not visible, needed to end process from sys mon then reopen - workaround https://launchpad.net/bugs/77625 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs