Having all the same issues here, and so are some of my clanmates on NA.
Game works fine for a little bit, then all of a sudden it won't fire when I click. And sometimes, usually before this starts, my gun will fire on its own as soon as another round is loaded -- like it's a runaway weapon on full auto or something.
I tried uninstalling the autoaim mods after I had heard that they were bugged, but I'm still having the same issues.
The game works fine sans mods, but alas, I really love Aslain's, and I simply won't play modless...