Binary /usr/bin/man is setgid man Cache dir /var/cache/man is owned by root:root and only writeable for root. So, man can only save preformatted pages viewed by root Fix: chgrp -R man /var/cache/man chmod -R g+w /var/cache/man (or even "chmod -R g+w,u-w /var/cache/man") To disable saving of preformatted man pages entirely, i think it would be better to use the switch in /etc/man.conf.
*** This bug has been marked as a duplicate of 40322 ***