Maybe someone could help me out with this:

I checked my ps3 and everything is right. I have nat type 2 and great internet speed. I have no problem in connecting to the p2p servers but when I try to connect to the offical servers it always gives me the "cannot join server."

It does have the green light for me to join and I've tried about 20 different servers. I have tried for weeks to join one. Anyone have a clue as to why I cannot join a offical server?