Essentials has a SocialSpy function that does exactly that: allows you to see other players' private messages when you toggle SocialSpy on. Alternatively, you could get a simple plugin that logs commands to your server.log and then look at that file for any "sneaky" needs. The drawback incumbent with this alternative solution is that only you, the server owner, can "spy" on people because only you have access to the server.log (I assume). However, having this extension can prove to be useful in many situations, just in general. TheBeast808 Have you tried running just a vanilla bukkit server for a few hours/ a day to see if the problem persists? It could be that a plugin is tampering with some of bukkit's functions, making the error seem to stem from bukkit, itself - though the problem might not be a direct result of bukkit's native functions. I don't have a clue why you're encountering that problem, but running a vanilla bukkit server is a good diagnostic test in situations like this. EDIT by Moderator: merged posts, please use the edit button instead of double posting.