I had a lot of patience with this game's server issues, concidering the price i paid for it and the time You had to fix it. Now it got to a point where it definetly needs to be fixed immediately and is of no use at all. As many other folks i am having an open NAT, up to date firmware, no problems whatsoever with any other multiplayer title so far. I got problems from the beginning, from centipede, zebra, rabbit..the whole noah's ark. On top of it i got thrown out countless times at strike bosses, the raid boss etc. I am currently stuck with a game i can't use in any way near properly and paid 110 € for it. I get disconnected every 5 minutes. It got even worse since sunday. You sold an always online product. Get it online then.
Most of those errors are in reference to general network connectivity issues. This article may help you improve your experience.
http://www.bungie.net/en/Help/Article/11930