re: 1 of 400 dpkg databases corrupt?
Afaict dpkg has no mechanism in place for detecting or recovering from database curruption. The format of the datbase
means that curruption tends to lead to dpkg forgetting a number of packages exist and thinking one package has a very
I suspect this mean that 0.25% (1 of 400) of the machines reporting to
popcon.debian.org got a corrupt/inconsitent dpkg database.
Next time the user uses apt it will complain about broken packages and advise the user to use apt-get -f install. Apt
will then reinstall forgotten packages that other packages depend on but if nothing depends on the package it will be
left present on the system but not in the dpkg database.