LWJGL changed its message processing, so that a particular thing that i'm doing in that demo doesn't work under Windows. I won't update the demo ATM because i hope that a future version of LWJGL will handle this case correctly (again...). But in case you want to use that example with LWJGL 1.1.4 under Windows, look at the connect(...)-method in feud.testgame.BlueThunderClient and replace this section:
while (mouse.buttonDown(0)) {
// Avoid entering the level while the mouse button is being pressed
org.lwjgl.input.Mouse.poll();
Thread.sleep(10);
}
with this:
while (mouse.buttonDown(0)) {
// Avoid entering the level while the mouse button is being pressed
org.lwjgl.opengl.Display.processMessages();
org.lwjgl.input.Mouse.poll();
Thread.sleep(10);
}