According to Apport, my bug (bug 511959) that I just submitted is a duplicate of this one. Description of when it occurred for me:
Firefox was restarting itself after installing a plugin (AdBlock+) using the Add-Ons interface. It happened after clicking the "restart now" button. ** Visibility changed to: Public -- firefox crashed with signal 5 in _XError() https://bugs.launchpad.net/bugs/510291 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
