That same thing is happening to me, and I know I'm not entering my password wrong because I checked on the
www.socom3.scea website, and it works fine. And it can't be the server because there was 10,000 people on last night when I tried it. This is the same thing that happend to me when I got banned for ranking up, but now I don't know why it's happening. So I called Sony (800) 345-7669 and they told me to come to this site, and message socom. I did and so far no reply. If anyone has any information on if I'm banned or what's going on. Thank you