[Erisine]

Or you grow up and stop invalidating the entire process by creating fake logs. I sometimes wonder if the fakers out there ever heard of the boy who cried wolf?

I wouldn't go as far as to automatically discount player-submitted logs -- but I would take into account the nature of the player (if he were known) and look at their track record on the game. Is this person well known for crying foul, harassment, or other sorts of shinanigans? In the event of forgeries, have a zero-tolerance policy in place. And of course, look for other supporting evidence.

As another individual stated, there are ways that you can put the responsibility of logging into the hands of the MUD itself -- automatically dumping players' last 1000 commands after the use of a report command could come in handy.