ICnight and Hey Its Steve are exploiting a glitch in the barricades to cause players to disconnect from the server in order to pillage the player contents. They drop barricades on you and the effect of the player going forward thru the barricade causes a desync of some sort that kicks the player from the server and allows the exploiting player to kill the sleeper and loot the body. This should immediately move to the top of the list of needed fixes. I suggest 2 things : First a 10 second cd after placement before it affects the game world. Secondly the player placing the barricade moves at crafting speed for the duration of the placement.