FOSS gamedev and creative worlds

Hello, I've got weird problem with connecting to a server(Sunrisetest). Immediately after logging in, the server shuts down, but if I'll change my nick, it will run without any problem. I played there for four days, and today, when I have logged in, it does that bug. Also my brother had the same problem on his laptop. OS Lubuntu 13.04- 32bit.
I'll be glad for any help.

http://forum.minetest.net/viewtopic.php?pid=93026#p93026

See this, it's a server bug, try playing on another server.