I reinstalled the client, and updated all the files again, and I noticed something.
This guy here does not proceed with the download. If I close the patcher, it says the download will resume, when I open it again; it does not happen.
I deleted the file, and relaunched the patcher, and it still stays like that.
Maybe it does not concern my problem, but it is the only strange thing that i noticed with the update process, along with ALL the "stadif" files being at 0 kb size.