We have two other guys who do WOW - one Marine, one Army.
The bandwitdh here isn't the greatest. I open the firewall for certain times, and then shut it down so others can get out.
I always open my firewall too, and I also disable anti-virus software when I'm playing. Games tend to be resource hogs on systems and you need every bit of RAM you can get lol. One of these days I just know I'm going to get hacked or infected with something while I'm playing a game.