I recently signed up to DreamObjects & even asked my webhost to move my account over to a server that supports PHP 5.3 just so I can start offering site backups for my clients using this plugin.
So far, I'm running into problems with backing up a test site that is 45.34 megabytes and a database of about 500 kilobytes.
I've configured it to backup the site weekly and back up both All Files and the database. Following that, I went to do an ASAP backup and now I'm stuck with 'You have an ad-hoc backup scheduled for today at 09:08 am. Do not hit refresh on the backups page. You may continue using your site per usual, the backup will run behind the scenes.' in the yellow box. I've tried disabling & uninstalling the plug-in to see if that removes the message, but it doesn't.
I turned logging on and tried another ASAP backup. debug.txt only says
[2013/05/23 09:58:36] Scheduled ASAP backup. and nothing else.
The memory limit is set to 32M and safe_mode is off. I'm unable to use wp-cli to see if I can do it manually.