This weekend, accessgrid.org webpages will migrate to machines at the University of Chicago. This is part of the transition of the community Access Grid resources from Argonne to the university, working toward the gial of greater accessibility by the community. As part of this, the accessgrid.org webpages will link to the new AG community portal, AGCentral, which will be reachable at portal.accessgrid.org. The next steps are planned to include integration of the accessgrid.org content and the portal, and migration of the portal to the university.
Note that it may take some time for the accessgrid.org change to propagate across DNS servers, so you may encounter some difficulties getting to the accessgrid.org webpages this weekend. Thanks, Tom Uram

