How Reliable is the Trans-Atlantic Link?

bdamm asks: "We are looking at doing a Web application that will be rolled out internationally. Currently we are looking at the feasibility of centralising our application, or building a larger system that can allows for multiple hubs separated by slow connections, such as the Trans-Atlantic link. My question is, does anyone know just how good the Trans-Atlantic link and other major non-U.S. backbones are? Is it fast enough to allow everything to be in one place, or just good enough to have HTML generation occur centrally with satellite image servers?"