Scheduled tasks not working

[vinku]

Hi,

I have added scheduled tasks of my own that are not working.

I can run them manually and they work fine, but they are not running by themselves as they should.

I have set time interval of 10 mins by keeping all fields as * and the minute fields as 10, 20, 30, 40, 50, 59.

Whenever I go in edit and save that task again then only the 'next time' gets updated but still the task doesn't runs.

Any ideas?

I'm not using any plugins/add-on etc. Any help would be appreciated.
Thanking you in anticipation.