According to a story on DailyTech Windows Vista is going to grind the internet to a halt. Yes, that is difficult to believe; even for those who openly critise Vista. Supposedly, Windows Vista's DNS implementation may reduce the internets performance, as it supports two different versions of TCP/IP.

Windows Vista supports two versions of TCP/IP these are known as IPv4 and IPv6. Now, we have been running on IPv4 for some time, but with Vista we are going to move towards IPv6 -- this is where the problem lies.

According to DailyTechs article the problem lies in the method Windows Vista utilizes the IP stack,.according to Paul Mockapetris "Windows Vista is going to try a DNS lookup for the IPv6 address and then a DNS lookup for the IPv4 address," this uses more of the DNS system and until supply is increased thing might get slower.

It probably won't be as big a problem as he makes out, but I wouldn't be surprised to see Microsoft back track with Vista again.