User blog comment:SonicFreeman/This is werid/@comment-23977609-20140218194054/@comment-23970955-20140218194523

Not all in a row though. There is nothing new to 1.2.3 to cause this, so either you are incredibly (un)lucky, you have an intruder on your server spawning them in, or you friend is trolling you and spawning them to make the game more interesting.