So UI5 is there. Are you really sure it isn't the December bug? It really seems like that's the case.
> All entries for the slection 'INDEX' and 'html' (all XS objects) have activation date as Nov-25-2013.
Yes but what about the UI5 libraries themselves. If you just imported the DU or built a new system they would also be subject to the December bug. Have you ran the update script on Active_objects table wide open as described in other threads?