Running MineCraft Server on Ubuntu Server

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http://askubuntu.com – I run windows 7. I Run a MineCraft server, but I can only host around 9 players before lag appears. I heard that Ubuntu can run a server with much better performance than win7. I kind of like the whole idea of Ubuntu, but I don't want to change my OS to unix or anything. Basically, my question is, does running a server (specifically and minecraft server) run easier and faster on a Ubuntu server? On top of that, how would one set that up. Thanks in advance for replies. (HowTos)