the .cache/apport deletion seems to have been the trick. sudo apport-collect 654898 produced the attached dialogue, so yes it is repeatable.
** Attachment added: "error message" https://bugs.launchpad.net/ubuntu/+source/apport/+bug/654898/+attachment/1675609/+files/Screenshot-Close%20Firefox.png -- apport-collect requires firefox closure https://bugs.launchpad.net/bugs/654898 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
