Uninstallation

[aseques]

Then you'd have to delete the vuxxxx users and everything under /var/www and /var/mail/virtual/

But if you have the chance to do a full reinstall of the system it will be better, so no trace of mistaken configurations remain.

UPDATE: removing the packages from ./docs/Debian/debian-packages-etch, might be certainly dangerous (haven't seen that there was bash and ssh) so unless you know what are the real important ones to keep, your best chance would to reinstall the whole system.