I can't seem to get into any online lobbies when I try to play co-op. If I open up my game either no one joins or it takes 15 minutes or more for them to connect. Even then they usually get disconnected within 5 minutes of playing. When I join a game, also let it be known that there was hardly anyone in the search field when I did look, I get disconnected from the guys game within 15 minutes.

Anyone know what's up?

Well, I just started playing the game. Someone joined my Chris game within like 2 minutes of me playing. 5 minutes later there was a connection issue and he dropped out. So something went wrong. No one else joined.

20 minutes into starting the game, a message popped up saying there was a connection issue. So, yes. I am also having issues. 

I was just going to post a thread about this, yes I have this same exact issue. It sucks, because I got to my first 4 man mission... and the entire time I was imagining how fucking awesome it would be if the other three players were actually real people.

I love the game, I just hope this gets patched. :L

Mercenaries seems to work ok though...

Yea... Mercenaries is working fine... been playing that. Fun as hell. Definitely helps that mode to be a lot more mobile. Love running around and sliding and it feels like you have to worry a lot less about ammo which is nice.