After some additional troubleshooting, it appears that the crashing bug is generated by the Adblock Plus 0.7.5.5 add-on.
If the add-on is enabled, Firefox will crash (see error messages above). If the add-on is disabled, Firefox--to date--has not crashed. I have made some requests in the Adblock Plus forum, asking for further details on troubleshooting some further debug details. More to come. -- Firefox Crashes During the Night(?) https://bugs.launchpad.net/bugs/243520 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