Over the last week i have had several people ask me about their cron.  In multiple cases the issue was the address for the cron.  They were getting "no input file specifed" message.

Although there are different commands required on different servers depending on server config this is the standard set up below

If your site is in the root domain.  Then your cron should be addressed this way.

php -q /home/username/public_html/ow_cron/run.php

However if your site is in a sub domain (sub folder).  Then your cron should be addressed this way.

php -q /home/username/public_html/mysite.com/ow_cron/run.php

Hope that helps.