It's probably due to the fact that some routers have Plug-and-play enabled by defaut and others dont. When you have UPnP enabled, it automatically opens the ports needed in your router so the PS3 network can work like it's supposed to. When you don't have it enabled, you have to do that manually by using the Port Forwading fuction on your router's settings.
Message Edited by renatoop02 on 05-05-200707:22 PM
See, that's where my question arises. I have never had a problem or had to open any ports. I asked because I use the Linksys WRT54G yet I have read of people with the same router having to open ports. Could this depend on whether or not the connection is wired or wireless? I was suspecting that something to do with wireless security was at work here.