I recently upgraded my WP version up to 2.0.4.
All scripts and plugins works fine, except the wp-cron plugin.
If I try to backup my database on the fly I haven't problems, mail is immediatly delivered. But if try to schedule the backup i don't receive the e-mail.
I have this problem since the upgrade from 2.0.3 to 2.0.4
In order to testing this strange behavior i tried to install a fresh version of WP 2.0.4 in a testing domain, enabling only wp-db-backup and wp-cron, but unfortunately the problem persists.
Have you some idea or a similar behavior on your blogs?
Thank's a lot