How do I enable logging?

Hi all,

I'm sorry if this appears to be a silly question but I cannot seem to get any output in my logs. I've set Debug to enabled (although it resets if I restart the Openfire server) and all my logs (Error, Warn, Info, Debug) are empty. Not much more to say other than what am I missing? Why is Openfire as silent as the grave?

Thanks,

Ian