All reports of not-using-po-debconf for the archive. The extended description of this tag is:
This package seems to be using debconf templates, but it does not use po-debconf to make translations possible (debian/po doesn't exist). Debian Policy requires that all packages using debconf use a gettext-based translation system. If this package uses one other than po-debconf, please report this as a Lintian bug along with how to detect that system.
Refer to Debian Policy Manual section 3.9.1 (Prompting in maintainer scripts) for details.
Severity: serious, Certainty: certain
Check: debian/po-debconf, Type: source
Emitted (non-overridden): 2, overridden: 4, total: 6
The package names link to the relevant maintainer page and the corresponding report for the source package. The links go to the full maintainer report page, which includes info and experimental tags and overridden tags, rather than the default page that shows only errors and warnings.