Comment 3 for bug 683367

I can't reproduce the test now (not because it is not reproducible but because of the lack of available resources) but I noticed that /var/crash doesn't exist on a fresh install and enabled=0 in /etc/default/apport

This is a guess, but would it be possible that a crash during a release upgrade just after a fresh installation with apport disabled could cause this issue? But that would mean that apport is activated during a release upgrade, and of this, I am not sure.