As during the Pathfinder mission we have primary corporate mirror sites with substantial bandwidth and server capacity:  http://mars.excite.com  http://mars.sgi.com We also have software that automatically redirects users to our primary corporate sites: MPL: http://polarlander.jpl.nasa.gov MARS: http://marsmission.jpl.nasa.gov Our primary sites use virtual addresses to handle traffic. If you are using an older browser (IE 2.0) then select from our fast loading list of mirror sites: List of MPL Mirror Sites For more information see the Distributed MPL Website Diagram.