On the subject of mobile phones I use to use one for racing I'd say one out ten races was good all the other times the room would have heaps of problems. Not saying it was totally my fault but when I changed over to wifi from a router things improved I then decided any probs was sonys fault not mine until the guys I was racing with told me to hard wire my router to the PS3 WOW miracles I now was not getting disconnected thnx to my racing buddies and listening to what they said I can say with no doubt that wifi & mobile phone users do put a strain on the server for some reason (phone being the worst). When they come into the room and you've been racing for a while you can basically garantee problems will start. I know that all want to have fun but it's not fair when your racing your guts out then all of a sudden the car in front decided to teleport straight into your car unnoticed by its driver or decides to drive of the track and come back on deciding your car should be off track in the dirt once again Unknowningly by its driver. I know their not malice racers they are for part quite good drivers BUT THEIR PHONES HATE US.