by Christian Wurzer.
Thank you for the answer.
Yes, I´ve activated monday, tuesday,...friday.
Right now, I`ve started the www.yourmoodlesite.com/admin/cron.php script and it says:
...
Backup of '1314_BIU-2M' is scheduled on Mon, 23 Sep 2013 17:10:00 +0200 Skipping 1314_BIU-2M (Does not require backup)
....
In Reports/backup there is now a log file - yippie, but it says, that every course is skipped.
The complete file is in the attachment.
Thank you,
Christian