Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

I have seen a increasing problem lately with people attempting to sneak or run by me to get chests. usually this hasn't been a problem but i know there are new players coming in all the time and i'm being on the positive side thinkin maybe they just don't know the rules. i don't do screenshots because it would be impossible to prove this. has anyone else been having this? Should I approach these people when they do this with a tell maybe? I've run across players on this server that get downright rude when their caught breaking rules even though you don't mean to be a jerk. How should I handle this?
Thanks for your imput.

See if a DM is online. Also get a screen shot.

19. Players may not use invisibility, stealth, or any other means of avoiding detection in order to loot chests and drops in a dungeon already occupied by anyone else. It is the responsibility of the hidden looter to ensure they do not jump ahead of others working their way through a dungeon. Dungeons may extend through several maps, and would include the entire collection of maps with a similar theme and creatures.

Ive always found issue with that particular rule. For instance one could successfully argue they entered kobolds ruins and an hour later ran into a party in the bat cave who just so happened to be opening a chest. Of course they entered through the gibberlings so who is right? Also the rule actually encourages stalking which most would consider griefing if they were the victim. I got the point of the rule but its open to wide interpretation from devious sorts.

Not to discount using dm's but keeping it in game allows for much more in game stuff and way less bothersome he said/S(he) said. For instance if you happen upon the person who ran by you earlier now at a chest! let him have it. call him a dirty rotten pilferer who couldnt cut it as a real warrior. those would be fighting words so maybe use *mumbles really quitly* rotten bastard i hope your greed gets you killed. instead of /w "rotten bastard i hope your greed gets you killed". it sucks people are jerks but its one of the truly real aspects of Pw's, jus like life

Also i totally agree with your assessment of how people react to being advised as to their actions. Which means sending tells is a no go zone imo. keep it in character and know death is not a punishment but a release.