I've just tried to restore a course and notice that individual course back ups, i.e. in the backupdata folder for each course, all stopped on 17th January 2011. We have Moodle 1.9 on 2008 Windows server running IIS7, and the cron job appears to be running correctly. The admin settings for course backups are set to Active. I can't figure out why this should be happening. Any suggestions?