Yes Mt. Gox is down, and there is an 80gps or more by now DDoS going on, on top of many many people trying to access the server and over 20k new registration per day. Here is the most recent comment from Mt. Gox via their twitter page to confirm this. "We are experiencing a stronger than usual DDoS. We are working in it". This is happening because of many reasons. There are some that don't want bit coin to succeed but it is out of their realm of control. There was a article today on CNN bad mouthing the site and bitcoin on main stream networks and the different traders people should use instead of Mt. Gox trying to shift major market control from mt. gox into who's hands...banksters maybe Huh??? You have to understand the hardware capabilities that Mt. Gox had at this time and even with the new upgrades this was not foreseen. They will need to implement new hardware. Plus new software that they will need to create themselves to ensure attacks like this can be stopped and enabling them to keep the site secure. It seems they plan to do this we will see. Regardless we all must stand behind bitcoin and the people that work to keep it going like Mt. Gox. We will not let the elitist tactics scare us away from our goals for bitcoin. We must keep mining and using the currency no matter what tactics are used against bitcoin.
Further more we will not trust in any currency like the us dollar that is clearly being manipulated and will eventually leave the entire country broke and in shambles when the world reserve currency changes...