Noel: to answer your question, the IPMS Nats is judged on Friday evenings starting about 7pm. Thus, they have no time constraints on getting done for the public since the room is not due to open until the next morning. There have been times when the judges weren't done til after midnight and the final Grand Award winner wasn't picked until close to 2am, but that's rare now. Generally, they're all done by midnight. The ONLY time constraint I'm aware of is occasionally the VENUE will have a "lights out" policy for the entire convention center of midnight, and THAT does cause some headaches; but as mentioned it is VERY rare.
By the way, many years ago judging was on Saturday morning and there was a "rush" to get done so that the people would have enough viewing time on Saturday afternoon. That's why judging was moved to Friday night, and it's worked very well; though it completely eliminates the ability for anyone to come and enter anything on Saturday.
And Rusty, it IS possible to be overly zealous as a moderator. It's one thing if one member insults another directly by labeling them as deceitful, even if done with flowery language. But, making a point, even with a bit of sarcasm, is not entirely out of place. It's tougher to discern intent on a forum because there's no voice inflection, but I think a moderator can simply question a statement before accusing or warning someone about it. Stepping in TOO often can kill an ability to have a flowing dialog, which is the purpose of a forum like this!