I patched my JA and everything works, except LAN games.
If my neighbour, we have a constant LAN connection, creates a server, it's not shown under Local source, it's not shown anywhere, I have everything as it should be and it works with JO but why doesn't it work with JA. When I try to set his IP as favourite it shows a server with only type of game and IP adress, when I try to enter it, the game won't respond until I press Esc.

WHAT'S THE PROBLEM?????

If he is behind a router he probably doesn't have the right ports opened up, they are different in Jedi Academy (29060-29080) than Jedi Outcast (28060-28080).

In the future, please put questions like this in the Dedicated Server forum where they belong. You would have found your answer there if you had looked for it.