I ran into this problem and realized that "sh /usr/lib/php5/maxlifetime" wasn't returning a number of hours. So there isn't any argument being given to -cmin and the find command outputs the error reported by Norbert.
Running "sh /usr/lib/php5/maxlifetime" gave me the error message "Fatal error: Directive 'allow_call_time_pass_reference' is no longer available in PHP in Unknown on line 0". Commenting out "allow_call_time_pass_reference = On" (and a few other lines) in /etc/php5/apache2/php.ini made the error go away. At this point, /usr/lib/php5/maxlifetime outputs a number of hours once again and find no longer fails. Emmanuel -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org