I am attempting to host a Minecraft server from a hp pavilion desktop running Lubuntu 13.04. After every couple of hours, the connection drops, a window appears asking for an administrator password, then another window appears asking for the network key. It then connects again with no problems, however it is a pain to keep doing that. It works fine on puppy, but I'd rather use Lubuntu. Any ideas? I have also tried with multiple network adapters, and the same thing happens every time.