I am currently having the same issue. It started at about 10:00 this morning and continued throughout the day. It is telling me that there are only 500 people in Infinity slayer and less in the other playlists. I can join games and play but everyone i run into is terrible and there is never a game full of people. I can't join up with any of my friends either. It says status joinable under their profile but when I try to join it doesn't work.
How do i contact 323 about this problem?
Please Help! this is very annoying!