It seems that either your xulrunner-1.9 is not matching your firefox-3.0 or that something is broken (missing or broken lib).
Please, show us: $ dpkg -l | grep -E ' (firefox-3.0|xulrunner-1.9|libnss3|libnspr4)' -- Firefox-3.0 fails to start https://bugs.launchpad.net/bugs/191608 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs