Implemented #1107.

code/datums/mind.dm

@@ -20,6 +20,12 @@ datum/mind
 	var/rev_cooldown = 0
 
 	proc/transfer_to(mob/new_character)
+		// multikey information is stored in the mob, not the mind, so
+		// we need to clean this stuff up to avoid multikey alerts
+		current.lastKnownIP = null
+		current.computer_id = null
+
+
 		if(current)
 			current.mind = null
 
@@ -28,6 +34,9 @@ datum/mind
 
 		new_character.key = key
 
+		// mob/Login() will handle setting the new mob's lastKnownIP and
+		// computer_id for us
+
 	proc/store_memory(new_text)
 		memory += "[new_text]<BR>"