All reports of file-in-usr-marked-as-conffile for the archive. The extended description of this tag is:
All configuration files must reside in /etc. Files below /usr may not be marked as conffiles since /usr might be mounted read-only. The local system administrator would therefore not have a chance to modify this configuration file.
Refer to Debian Policy Manual section 10.7.2 (Location) for details.
This tag has not been emitted in any package tested by Lintian.