I had a question about Magento 1.8.1.0. For some reason not start in our Magento installation, the cron jobs. On the server side, we start the cron.php. To be sure, we have another cron job started on the server side on a test file. This works perfectly.
Only the original "mymagentofolder / cron.php" to be started cronjobs not start. We have tested the server-side cron as direct and as a http call. We have an extension installed for monitoring the Cron (Lanot-CronSheduler).
It displays all the system cron jobs. But no cron job in the queue.
Can it be that you can disable the system or perhaps in a script, the cron job function somewhere? And since we need to activate something? We have worked in recent months quite a lot of it.