Just got off the phone with Sony (1-800-345-7669) , basically said that the server is down for maintainance due to MW2. Apparently it's caused some havoc on Sony's servers. If you want to attempt opening ports to see if it might correct the issue here they are.
TCP: 80, 443, 5223, 10070 through 10080
UDP: 3478, 3479, 3658, 10070
It's about all I got from them. Would be nice if they could actually aknowledge there's an issue and perhaps post some form of update. They've had more than 12 hours. Too bad the moderators dont' actually work for the tech dept at Sony.