with F23 you find this lines in the logwatch mails itself all the time Redundant argument in sprintf at /usr/share/logwatch/scripts/services/postfix line 1382, <> line 10. Redundant argument in sprintf at /usr/share/logwatch/scripts/services/postfix line 1382, <> line 10. Redundant argument in sprintf at /usr/share/logwatch/scripts/services/postfix line 1382, <> line 10.
*** This bug has been marked as a duplicate of bug 1279936 ***