I have installed the cron job as proposed. Now I'm wondering if there are reasons when I should disable it temporarily, so that nothing gets in conflict. Is that necessary at all or is Magento able to dismiss cron jobs when needed?
Do you disable them at any time? During updates or reindexing or whatever?
If so, how do you do that? Do you evaluate the existence of the var/maintenance.flag file in your crontab for the maintenance mode?