No Cronjob will work !

[sid61]

Hi Plesk User and Ples Company

I have install a blank Version on Debian Squeeze Server Plesk 10.4.4.
Now i add a lot of Cronjobs for php.
It will not run any Cron job for me, Backup Jobs too...
It looks like Cronjobs are not longer supported by Plesk Version 10.4.4.

The only Way to let them run is to make the Jobs in Crontab, but thats only work for my PHP Cronjobs.
Plesk itself fail with cron...

Any Ideas, what i can do here to fix this Problem ?

Thanks
Kasimir