Hopefully this is just part of the transitioning of opendesktop.org to new servers, but there are many dead download links to some of the highest rated and most popular downloads. e.g.
Do the new stores have copies of the originals that it will update links to when the transition is complete?
Additionally, there are accounts (mine included) that seemed to have disappeared. The kdelook account (created 2/10/2008) had the password lost, and the opendesktop.org account (which was supposedly the same, but listed as created 2/13/2010 regarding the KDE4 Collab Server project) simply vanished without a trace.