and one more thing...if there is some kind of connection-tune-up software installed (also a proxy...) than there is a good chance that you need to use the link as Southwest mentioned. These mentioned progs store the numerical values of the URLs and speed up the connection...these values however have changed!
If you used to go to 6th floor and now the office moved to 7th floor, you need to tell the lift the new address where to stop....