What's this on my plant?

A question from a fellow grower:

I have dark brown spots showing up on the fan leafs I suspect that it might be some kind of mold ??

Any Help would be highly Appreciated !!!

Do not see mold.

http://support.ilovegrowingmarijuana.com/t/fill-out-a-support-ticket/1458/16?source_topic_id=3213

This will help evaluate the issue better.