It's not very clear in the preferences tab Backup Schedule whether the backups are ran EACH 12 hours, 3 minutes, or AT 12:03. Is it possible to create a backup each workday at 5?

Also, the icons in the main screen don't have a tooltip attached to them. The icon's are on first view not self-explanatory, so it might be a good idea to add them.

moved icon enh into http://code.google.com/p/flyback/issues/detail?id=11

they work like the crontab entries. but i agree it could be clearer.

new cron GUI. less flexibility, but easier to use.