[Edited by moderator PWizard, 10/27/2009 1:15:30 PM]
Would also like to mention that Kelsat is a dumbass
[Edited by moderator L, 10/28/2009 5:00:22 AM]
As far as multiplayer, most of the problems I've heard about seem to stem from people not opening the proper ports on their routers.
Forward those and you should be able to both join and host public and private games.
I'm not sure where exactly the cap is - I was level 19, and I boosted to 25, saved, exited and reloaded my save game, but I'm still not earning any XP anymore. It used to be the case that if you boosted your level or XP at all then shot at someone, your weapon stats wouldn't increase and you'd only get 1XP per kill, but that would clear out after a reload of the game.
Either that or just an option to increase one's weapon proficiency rating.
The level cap is 50. However once you use the trainer to upgrade your level you'll cease to earn EXP (someone else mentioned the same issue earlier in this thread). This is why I've only used the trainer to add money, and played the game normally.
Edit: Maximum for weapon stats is also 50.
[Edited by Draesk, 10/27/2009 5:44:31 PM]
firewall and other security software.
on trainer and game.
version and distribution.