now i have the problem i can't find scheduler_watchdog.dist this file anymore.Please note that if you perform a patch level upgrade from OTRS 3.3.6 or earlier, you need to activate a new cron job that controls the scheduler process. Please copy the file /opt/otrs/var/cron/scheduler_watchdog.dist to /opt/otrs/var/cron/scheduler_watchdog and update your crontab with /opt/otrs/bin/Cron.sh start (as "otrs" user, not root).
and if i make a note on a ticket it loops so i got 500 same notes.