Scoobes on 08 April 2009
Don't get annoyed at me for asking this as it's probably really obvious, but are you using the same PSN account? If you are then try on a seperate account.
Could be that the game tries to connect using the same ports on the router and finds them already in use? Should be a way to get the game/PS3(2) to use different ports. If not, it may be that they (game servers) won't let you connect two from the same IP. I'm not sure as my networking knowledge is a bit limited. Maybe try contacting Activision &/or Sony. Sorry if this isn't helping much.
