I’m using CentOS 5.2/5.3 everywhere,
virtualmin installed through http://software.virtualmin.com/gpl/scripts/install.sh
after basic OS installation. Compression method is gzip in Module Config, all backups are scheduled, in one single archive, then copy through SSH to another server.
Copying virtual server configuration …
… done
Backing up Cron jobs …
… none defined.
Creating TAR file of home directory …
… done
Saving mail aliases …
… done
Saving mail and FTP users …
… done
Backing up mail and FTP user Cron jobs …
… none to backup
So, it’s a bug. It’s not behaving as documented, and is offering no errors about why. So, file a ticker in the tracker (with the information you’ve provided here), and Jamie will either get it fixed, or figure out why it’s not giving back reasonable errors on your system about why it isn’t working (which would also need a fix; either way it’s not behaving correctly).