The 1.3.1 version for the SMP server has been released 6 hours ago Before using this version i am waiting a extra 1~2 days to use it. This allows developers to update their plugins that the server uses and gives me time to sort all the things out. I will post a download link of the old world before it comes to the end. The world file is approx 400mb and only contains the overworld. (the normal world) Note that the 1.3.1 SMP is reported to be laggy.