DNS or Physical Connectivy Maybe
I would check the connectivity lights on the network interface on the PS3 to see if there is connectivity if that hasn't been checked. If you are still in the installation phase then I would ask in the terrasoft forums what the deal could be. It sounds like it hasn't gotten a IP address from no connectivity. It depends on a lot of things. I would post your network setup from the internet to your PS3 either here or terrasoft forums.