Bug#1143478: PAM (kde) /usr/lib/pam.d is not supported on this system; see /usr/share/doc/libpam0g/Debian-PAM-MiniPolicy.gz

[Marco Mattiolo]

After some search, I found the root cause of such log line in #1140029 .
Then, it would be ingenerous to say that libkscreenlocker6 must be 
"fixed", rather "adapted"...