It's fixed the problem with the PS3 DNS error perfectly for me all weekend, and my computer never disconnects anymore now too. No slowdown either, that I can tell anyway. This would be a good sticky until a more permanent solution is found by sony or the affected ISPs.
amstel78 how can i ever thank u???i can log on now!!!YAAAAY!!!!!finally i can play games online.I also hve roadrunner and from my investigation,the problem is with the ports,there are some udp and tcp ports which u can open to solve the problem permanently.But for me,this is a problem because iam renting my wireless router and unless u own it,u cant open the ports(got this information from time warner as they are the ones which provide me roadrunner).I also called netgear(as they had made the router) and they said that wen time warner leased the routers from them,they signed a contract with which they cannot open ports.