After our upgrade to Plesk 7.5.3, my /etc/crontab doesn't seem to be read anymore. Plesk's cron jobs(in the panel under system) run, but the /etc/cron.daily etc listed in my /etc/crontab do not run...

I've tried restarting the crond daemon
/etc/init.d/crond restart

but it still only runs Plesk cron jobs(verified because I noticed the last date of my own backup tar script was the day I installed the upgrade, so I made another one with execute permissions to make files in my cron.hourly and cron.daily and those files never appear, not to mention my backup isn't running).

Does Plesk run it's own cron daemon or should there be two running or has anyone else come across this problem?