I need a quick modification for a PunBB forum.? Basically, I want it where users (both guest and registered) cannot type in the same topic subject? within a period of thirty minutes.? This is for all guests and registered users grouped together and not just for the individual poster.? For example, if poster A typed in "GOOD MORNING" then poster? poster A,? B,? C, etc? **could not** type in "GOOD MORNING" as the topic subject for thirty minutes afterwards.? If you have any questions, please ask.? Thank you.